Please solve this question. no spamming.
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= 2cos(5π/12)cos(π/12)
= 2cos 75⁰ cos 15⁰
= cos 90⁰ + cos 60⁰
= 1/2
Trigonometry identity used
2 cos[(A+B)÷2] cos [(A-B)÷2] = cos A + cos B
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hey how's all going though ??
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