Question

Cos 12° - Sin 78°



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Answer 1

Answer:

cos12°-sin78°

sin(90°-12°)-sin78°

sin78°-sin78°

=0 ur answer

Answer 2

Answer:

It is zero

Step-by-step explanation:

Hi viewer,

Gn : cos12°-sin78°

= cos (90-78)-sin 78

we know that cos(90-x)=sin(x)

=sin 78 - sin 78

=0

Hope it helps!!