Determine the value of a.
a+22=-86

plz show how u got your answer

a=-108

Step-by-step explanation:

a+22=-86  both sides -22

a+22-22=-86-22

a=-108

according to the triangle sum theorem, all the angles in a triangle must add up to 180 degrees. if we know one angle is already 90, we do 180-90=90. the other 2 angles must add up to 90, exactly.

step-by-step explanation:

r and t.

both are 64 degrees.