Cluster · Trigonometric Identities and Equations

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Trigonometric Identities and Expressions
Questions
832
Questions in this cluster
827 total
Question Category Subtype Difficulty

Find the value of sin 75ºcos 75º.

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If secθ - tanθ = \(1\over \sqrt3\) then, find the value of sec2θ + sin4θ.

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If 15cot θ = 8, then find the value of sin θ + sec θ.

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If sin(A + B) = 1 and cos(A - B) = (√3/2), where 90° ≥ A > B > 0° then, find the value of tanA.

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Find the value of \({{3-4sin^2\theta}\over {cos^2\theta}}+ tan^2\theta\), if sinθ = cos θ such that 0 < θ < 90°.

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Which among the following options is equal to the value of sec A – cos A?

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Find the value of \(\frac{\cos35°\sin55°+\sin32°\sec58°+ \sin35°\cos55° + \csc 58°\cos32°}{\cot°10\cot°20\cot°60\cot°70\cot°80}\)

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If cos A cosec A + cosec A = 2, and A is in between 0 to 90 then what will be the value of cos A?

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If sec(60º - 2x) = 1, Find the value of x.

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Which of the following is equivalent to the given trigonometric expression?

2 sin2 x cos2 x (1 + cos 4x)

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Find the value of the following expression :

7/sin2θ - 7/tan2θ = ?

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Find the value of 2sin15°cos75° + (tan 22° – cot 68°) × sin 11°.

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What is the value of the following trigonometric expression?

(tan 75° - tan 15°)/(tan 60° + tan 30°)

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If sin x = 3/5 then, find the value of (cot x × cosec x).

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Find the value of Ø, if √2secØ - tanØ = 1. (0° < Ø < 90°)

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Find the value of sin30° + tan 30° - 2sec 45°cosec 45° + 3 sin π/4.

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Which of the following option is equivalent to the given trigonometric expression?

(sin x + sin 2x + sin 3x)/(sin x)

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Find the value of \({{3-4sin^2\theta}\over {cos^2\theta}}+ tan^2\theta\), if sinθ = cos θ such that 0 < θ < 90°.

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Simplify: (sin A - cos B) ÷ 2 tan 45º, where A = 30º and B = 60º.

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Find the value of (sin 1110°/cot 780°).

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Find the value of sin30° + tan 30° – 2sec 45°cosec 45° + 3 sin π/4.

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Find the value of 6√3(cosec 60° + tan 60°).

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If \(\frac{sec A - tan A}{sec A + tan A} = \frac{3}{5}\) Find the value of (Sin A + Cosec A).

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Simplify: (sin A - cos B) ÷ 2 tan 45º, where A = 30º and B = 60º.

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If tan A = (7/8), then find the value of:

\(\frac{6 \cos A\ + \ 3 \sin A}{\sin A\ +\ 2 \cos A}\)

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If 15cot θ = 8, then find the value of sin θ + sec θ.

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If SinACosB + CosASinB = 0, find the value of B, if A = 30º.

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Find the value of : cosec(40° + A) + tan(55° + A) - sec(50° - A) - cot(35° - A).

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Find the value of Cos180° + Cos135°- Cos240°+ Cos315°.

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If  \({1\over cosec^2\theta-1} - {5\over 1- sec^2\theta} - cot^2\theta - sec^2\theta = 1\) then, what will be the simplified value of cotθ?

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If \(\theta\) is an acute angle and sin \(\theta\) cos \(\theta\) = 2cos3 \(\theta\)\(\frac{1}{4}\) cos \(\theta\) ,then the value of sin \(\theta\) is:

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Find the value of [(1/sec2 A) + (1/cosec2 A)] × (tan2 B - sec2 B)

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sin290o + cosec290o - cot245o = ?

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If 1 +cot2θ = \(\frac{625}{49}\) and θ is acute angle, then what is the value of ( sinθ + cos θ)0.5 ?

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If sec \(\theta\) + tan \(\theta\) = √3, then the positive value of sin \(\theta\) + cos \(\theta\) is:

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If cosx + sinx = √ 2cosx, What is the value of (cosx - sinx)+ (cosx + sinx)?

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Evaluate (9sinθ + 2cosθ)/(9sinθ − 2cosθ), if 3tanθ = 4.

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Find the value of \(cos^2 25°-sin^265°\over{cos^2 25°+sin^265°}\) :

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Simplify the given equation. ( 1 + tan2A)(1 + cot2A) = ?

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Find the value of \(\frac{sec^2 54°-cot^2 36°}{cosec^2 57° -tan^2 33°}\) .

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If cot A = 7, then the value of \(\frac{5cosA+4sinA}{cos^3A+7sin^3A+6sinA}\)is:

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If cotθ = \(\frac{3}{4}\), θ is an acute angle, then sinθ + cosθ - tanθ is equal to:

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If 8sin2θ + 14sinθ - 15 = 0 then, find the value of\(\sqrt {cosec \theta - \sinθ + \cot^2θ}\).

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Find the value of [3(tanθ - cosθ)4 + 4(sinθ - cosθ) + 3(sin6θ - cos6θ)]/2(tan4θ + cos4θ).

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If tanθ - cotθ = 4, then find the value of tan2θ + cot2θ.

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The value of \(sin A \over cotA + cosecA\) - \(sin A \over cotA - cosecA\) + 1 is:

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The value of sin2 5° + sin2 10° + sin2 15° + ... + sin2 85° + sin2 90° is equal to:

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\((1+ tanθ + secθ)(1+cotθ – cosecθ)\over(secθ + tanθ)(1-sinθ)\) is equal to:

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If sec \(\theta\) + tan \(\theta\) = √3, then the positive value of sin \(\theta\) + cos \(\theta\) is:

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If cot A = \(\frac{12}{5}\), then the value of (sin A + cos A) x cosec A is ____________.

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