If tan A = √3 ; where A is an acute angle, then find the value of sin² A / (1 + cos² A).

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TextRelationship Between Trigonometric RatiosTrigonometric Ratios of 60 DegreesCBSE PYQ

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Evaluate : 2√2 cos 45° sin 30° + 2√3 cos 30°

If A = 60° and B = 30°, verify that : sin (A + B) = sin A cos B + cos A sin B

TextTrigonometric Ratios of 30 DegreesTrigonometric Ratios of 45 DegreesTrigonometric Ratios of 60 Degrees

Prove that : tan θ/(1 − cot θ) + cot θ/(1 − tan θ) = 1 + sec θ cosec θ

In a right triangle ABC, right-angled at A, if sin B = 1/4, then the value of sec B is

If x = cos 30° – sin 30° and y = tan 60° – cot 60°, then

If x = 2 sin 60° cos 60° and y = sin²30° − cos²30° and x² = ky², the value of k is