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Mathematics
Trigonometry
Cosine functions
The cosine of which an acute angle has the same value as
(a) - cos 162 degree
1 answer
The cosine function is an even function, which means that cos(-x) = cos(x) for all x. Therefore, the cosine of an acute angle with the same value as cos(162 degrees) is equal to -cos(162 degrees).
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The cosine of which an acute angle has the same value as
(a) - cos 162°
