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Cloud [144]
3 years ago
5

Which of the following functions is equal to sin(90° - )?

Mathematics
1 answer:
scZoUnD [109]3 years ago
8 0
Let <span>sin(90° - )------------------------ > sin (90-x)

</span>sin(a - b<span>) = sin a*cos b - cos a*sin b
</span><span>so
</span>sin(90 - x) = sin 90*cos x - cos 90 * sin x
sin(90 - x) = 1*cos x - 0* sin x-------- > cos x

 the answer is the option <span>D. cos()</span><span>

</span>
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