Mathematics, 24.06.2019 23:00 SmokeyRN

Complete the left-hand column of the table below following the steps indicated in the right-hand column to show that sin a sin b = 1/2[cos(a-b)-cos(a+b)] is an identity. use the definitions of sum and difference formulas for cosine.

Complete the left-hand column of the table below following the steps indicated in the right-hand col

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