Math, asked by jahanvikardam, 10 months ago

solve:sin100°+cos100°

Answers

Answered by manishmehta11032

3

Answer:

Sin 100° = sin( 90°*1 +10°) = cos 10°

Cos 100° + Cos 10°

= 2Cos {(100°+10°)/2}*Cos {(100° -10°)/2}

=2 Cos 55° *Cos45° = 2 Cos 55° *1/√2 = √2Cos 55°

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