Question

In Triangle RST, what is the value of x

Answer 1

Answer:

Step-by-step explanation:

Answer 2

x=100°.

By angle sum property,

WE have,

∠x+∠2a+∠2b=180°

Dividing the equation by 2

1/2 (∠x+∠2a+∠2b)=180/2°

∠x/2+∠a+∠b=90°------1

∠a+∠b=90°-∠x/2

∠a+∠b +140°=180 (By angle sum property)

90°-∠x/2+140=180°

280+180-∠x=180×x

460-∠x=360

460-360=∠x

∠x=100°

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