cos 38×cos 52 -sin 38 ×sin 52
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14
Cos 38 * cos 52 - sin 38 * sin 52
= Cos (90-52)*cos 52 - sin(90-52) * sin 52
= sin 52 * cos 52 - cos 52*sin 52
= 0
= Cos (90-52)*cos 52 - sin(90-52) * sin 52
= sin 52 * cos 52 - cos 52*sin 52
= 0
Answered by
3
answer is zero
as change cos to sin then take common yo will get zero
as change cos to sin then take common yo will get zero
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