Help me out please and thank u <33 will give branliest to correct answers only so don’t guess

Sam claims that cos x =sin y if x and y are congruent angels. is sam correct ?

1) in triangle the, what is the measure of angle t (in degrees)? 2) in triangle bat, the measure of angle b is 66∘, and the measure of angle t is 77∘.what is the measure of the exterior angle at a (in degrees)?

Anna is constructing a line segment that is congruent to another segment ab. for the construction, which tool should be used to mesure segment ab