1 Select the correct answer.
Which expression is equivalent to the given expression? Assume the denominator does not equal zero.
14:46
75872
OA. 2y4
OB. 7y3
OC. 73474
OD. 262 y8
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Which sum or difference identity would you use to verify that cos (180° - q) = -cos q? a.) sin (a -b) = sin a cos b – cos a sin b b.) cos (a -b) = cos a cos b – sin a sin b c.) cos (a -b) = cos a cosb + sin a sin b d.) sin (a + b) = sin a cos b + cos a sin b