Answer:
B. 42; 48
Explanation:
sin x = cos (90-x)
eg sin 42 = cos(90-42) = cos 48
There are different kinds of angles. The pair of angles have congruent values for the sin x° and the cos y° is 42; 48.
Congruent angles are regarded as a type of angles that is known to have all sides equal measure.
Two angles are said to be congruent if both sides and angles are of said to b equal measure.
not that sin x = cos (90-x)
therefore, sin 42 = cos(90-42) = cos 48
Conclusively, option B is correct
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