Respuesta :

abizzy
( the answer is 15) because in a equilateral all angles are equal and in the right triangle you already have 1 angle so just divide by 2 you get 45 so subtract 45 from 60
charstar
Triangle PQR is equilateral, all the angles are 60, this means that triangle PSR is an isosceles triangle. 180-90=90  90/2=45  60-45=15
B=15

Hope this helps :) 

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