Which sum or difference identity would you use to verify that cos (180° - q) = -cos q?
a.
sin...
Mathematics, 20.05.2021 19:20 mikailah0988
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
Please select the best answer from the choices provided
A
B
C
D
Answers: 2
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