Math, asked by nitishkumar79, 11 months ago

2. The value of cos 20° cos 70° – sin 20
sin 70°

Answers

Answered by Anonymous

26

Cos20° Cos70° - Sin20°Sin70°

=> Cos(20° + 70°)

=> Cos90°

=> 0

Answered by vashuvishwanath2003

9

0 is your ans

please mark my ans as brainlist

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