Question

find the value of a & b​

Answer 1

Answer:

a=40°

& b=90°

Step-by-step explanation:

angle ACB=90°(angle in semi circle)

& angle ACB=b

therefore b=90°

angle ADC + angle CBA=180°

130°+ angleCBA=180°

angle CBA=180°-130°

angle CBA=50°

BY USING ASP IN triangle ACB

Angle ACB+ angle CBA+ angle BAC=180°

90°+50°+a=180°

140°+a=180°

=>a=180°-140°

=>a=40°

Hope U LIKE

Answer 2

Answer:

b = 90°

a = 40°

I hope it will help you

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