Math, asked by Klklkl1691, 1 year ago

Cos 36cos54-sin36sin54 is equal to 0

Answers

Answered by ansarisohelrana95

2

Answer:

0

Step-by-step explanation:

cos36°cos54°–sin36°sin54°

=cos(90–54)°. cos(90-36)°–sin36°sin54°

=sin54°sin36°–sin36°sin54°

=0

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