Q. 105.0( 4 Votes )

If tan2 45° - cos2 30° = x sin 45° cos 45°, then x =
A. 2

B. - 2

C. –1/2

D. 1/2

Answer :


tan2 45° - cos2 30° = x sin 45° cos 45° …….(i)

put the values in equation (i),

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