evaluate cos1°,cos2°,cos3° so on cos89°,cos90°,cos91°
qais:
all multiplied??
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18
cos 1° . cos 2° ........cos 89°. cos 90° . cos 91 = 0
since cos 90° =0
and multiplying all term with zero, makes all zero.
since cos 90° =0
and multiplying all term with zero, makes all zero.
Answered by
7
cos 1°.........cos 90°.cos 91°=0
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