Question

answer me 30 no. question of maths of class 9​

Answer 1

Answer:

100 °

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Answer 2

Answer:

a+b+140=180

or, a+b=180-140

or, a+b=40 -----(I)

2a+2b+x= 180

2(a+b)+x=180

2.40 +x=180

x+80=180

x=100

Answer will be x=100

what you did wrong is that x will be 70 only when the whole triangle is inside a equilibrium position inside a circle.

Hope it help! :)

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