Same chapter3 marksDifficulty: Medium
Find the value of sin 15°.
Trigonometric Functions
Original Khojo Papers practice question — not from a past board paper.
(√6 + √2)/4
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sin 75° = sin(45° + 30°) = sin 45° cos 30° + cos 45° sin 30° = (√2/2)(√3/2) + (√2/2)(1/2) = (√6 + √2)/4.
From the same topic and chapter, at a similar level.
Find the value of sin 15°.
Trigonometric Functions
If sin A = 3/5 and A lies in the second quadrant, find cos A and tan A.
Trigonometric Functions
Find the general solution of cos θ = 0.
Trigonometric Functions
Find the general solution of sin θ = 1/2.
Trigonometric Functions
Prove that cos 2A = 1 − 2sin2A.
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Find the general solution of tan θ = 1.
Trigonometric Functions