The pair of angles which has congruent values for the sin x⁰ and the cos yº is; 70;20.
Which pair of angles has congruent values for the sin x and the cos yº?
According to the task content; it follows that the pair of angles with congruent values for the sin x and the cos yº is required to be identified.
It is noteworthy to recall that when two angles x and y sum up to be 90⁰; then sin x⁰ = cos y⁰.
On this note, the pair of angles is; 70;20.
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