find the value of cos 12 degree - sin 78 degree
Answers
Answered by
53
cos 12°-sin 78°
= cos (90-78)°-sin78°
= sin 78° -sin 78°
= 0
then answer will be zero.
if you wer agree with me the brainliest my answer.
= cos (90-78)°-sin78°
= sin 78° -sin 78°
= 0
then answer will be zero.
if you wer agree with me the brainliest my answer.
Answered by
17
cos12°-sin78°=0
cos12°-sin(90-78)° sin(90-A)=cos A
cos12°-cos12°=0
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