Question

1.Sin+co26 Cos

Answer 1

The given trigonometric function is sin 2 π 6 + cos 2 π 3 − tan 2 π 4 =− 1 2 .

Solve the left hand side of the trigonometric function.

L.H.S.= sin 2 π 6 + cos 2 π 3 − tan 2 π 4 = ( 1 2 ) 2 + ( 1 2 ) 2 − ( 1 ) 2 = 1 4 + 1 4 −1 =− 1 2

This is equal to the right hand side of the given trigonometric expression.

Thus, the trigonometric function is sin 2 π 6 + cos 2 π 3 − tan 2 π 4 =− 1 2 .

Since L.H.S. = R.H.S.

Hence proved.