Question

stion 46
An equation involving trigonometric ratio of an angle is a trigonometric identity. If the
L.H.S of the equation = RH. S of the equation for all values of such that
1
sind sin(60° -6) sin(60° + ) -sin38
4
1
cos cos(60° - 0) cos(60° + ) cos30
4
-
=
The value of cos 15º cos30° cos45° cos 75° is​

Answer 1

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