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What is the measurement of A?
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What is the measurement of A?

What is the measurement of A?-example-1
User Raymond Wu
by
5.3k points

1 Answer

3 votes

Answer:

∠A=-4X+170°

Explanation:

IN triangle some of all the angle is 180°

hence in triangle ABC

∠A+∠B+∠C=180°

GIVEN ∠A=X+20° ∠B=3X-10°

HENCE ∠A+3X-10°+X+20°=180°

∠A+4X+10°=180°

∠A=-4X+170°

User Jim Morrison
by
6.1k points
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