Question

please answer the step by step no spam answer I will report immediately​

Answer 1

Answer:

hope it will help you

Step-by-step explanation:

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Answer 2

Answer:

let b be 2x

then value of a and c will be x

a+b+c=180°

x+2x+x=180°

4x=180°

x=180/4

x=45°

hence,2x = 45×2=90°

b=90° Ans