Question

elevate
cos12 tan78​

Answer 1

cos12 sin78/cos78

=cos12 sin12/cos12

=sin12 answer.

please follow me....

Answer 2

$\cos(12) \tan(78) \\ = \cos(12) \times \frac{ \sin(78) }{ \cos(78) } \\ = \frac{ {( \sin(78)) }^{2} }{ \cos(78) } (ans).$

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