Find the value of (sin 75° + sin 15°).
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Correct answer: A
Explanation
The correct answer is option 1 i.e. .
sin 75° + sin 15° = sin 15° + cos 15° = t
Squaring on both sides, we get
⇒ sin215° + cos215° + 2sin15°.cos15° = t2
⇒ 1 + sin 30° = t2
⇒ 1 + 1/2 = t2
⇒ t2 = 3/2
⇒ t = √6/2