Question

find the value of a & b​

Answer 1

Answer:

a = 45

b = 35.25

Step-by-step explanation:

PQRS is a parallelogram

so, opposite angles are equal and sum of all angles are 360°

therefore

ΔP = ΔR

a = 3a - 90°

90° = 2a

45° = a

so, ΔP = ΔR = 45°

similarly

ΔS + ΔQ = 360° - 90°

ΔS + ΔQ = 270°

ΔS = ΔQ

so, ΔS + ΔS = 270°

ΔS = 135°

4b - 6 = 135°

4b = 141°

b = 35.25