In a triangle ABC, the measure of angle A is 40⁰ less than the measure of angle B and 50⁰ less than of angle C. Find the measure of angle A.
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Answer:
A = 30°
Step-by-step explanation:
Given:
In triangle ABC,
A = B - 40°
=> B = A + 40°
A = C - 50°
=> C = A + 50°
To find : A = ?
Sum of three angles of the triangle = 180°
A + B + C = 180°
A + A + 40° + A + 50° = 180°
3A + 90° = 180°
3A = 90°
A = 90°/3 = 30°
Hope it helps you:)
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