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Yuki888 [10]
3 years ago
11

Which sum or difference identity would you use to verify that sin (90° + q) = cos q?

Mathematics
2 answers:
Julli [10]2 years ago
8 0
\hbox{the sum identity:} \\ \sin(\alpha + \beta)= \sin \alpha \cos \beta + \sin \beta \cos \alpha \\ \\
\sin (90^\circ +q)= \\ \sin 90^\circ \cos q+ \sin q \cos 90^\circ= \\
1 \times \cos q + \sin q \times 0= \\
\cos q
adell [148]2 years ago
8 0

Answer:

Option B is your answer

Step-by-step explanation:

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