Question

find the value of the unknown in the rectangle​

Answer 1

Answer:

in ∆ ABC

54°+90°+b = 180° - ( sum of all angles of triangle is 180°)

144°+ b = 180°

b = 180° - 144°

b = 36°

now angle c = 54° + a

90° =54°+a - ( c = 90°)

90°-54°= a

36° = a

hope this will help you