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Given that cos42° is simpler to 0.743, What is the sine of the complementary angle?
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Given that cos42° is simpler to 0.743, What is the sine of the complementary angle?
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Feb 2, 2017
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Given that cos42° is simpler to 0.743, What is the sine of the complementary angle?
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cos(42)=sin(90-42)
So in this case:
cos(42)=sin(48)
As:
A complementary angle is either of two angles whose sum is 90 degrees. {Source: Google}
Neomib
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Feb 3, 2017
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The cos of an angle and the sine of its complement are the same number.
Spend a couple of minutes looking at a right triangle, and reviewing the definitions of sin and cos, and you'll see why.
Francescu
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Feb 9, 2017
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