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Brums [2.3K]
3 years ago
9

Which of these is equal to cos 47Á? A) cos 43Á B) sin 43Á C) tan 43Á D) cos 133Á

Mathematics
2 answers:
andreyandreev [35.5K]3 years ago
8 0
Correct answer is B.

\alpha+\beta=90^o
\\ \cos{\alpha}=\sin{(90^o-\alpha)}
\\ \cos{47^o}=\sin{(90^o-47^o)}=\sin{43^o}
JulijaS [17]3 years ago
6 0
I believe the answer is B.
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