In a right-angled triangle, angle A is 62 degrees. Find the corner b.

univerkov | November 24, 2020 | education

Given:
∆АВС – straight
∠А = 63 °
∠С = 90 ° (because ∆АВС – straight)
To find:
∠B
Decision:
Consider ∆ABS:
∠А + ∠В + ∠С = 180 ° (since the sum of the angles of the triangle is 180 °)
63 ° + ∠В + 90 ° = 180 °
∠В + 152 ° = 180 °
∠В = 180 ° -152 ° (when transferring the sign changes)
∠В = 28 °
Answer: ∠В = 28 °

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