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| 1. |
Solve the problem M is the mid point of AB. find the other two angle of ABC |
| Answer» GIVEN, M is the midpoint of the line AB and ∠m = 90⁰.We know sum of all INTERIOR angles of a triangle is 180⁰.In ∆AMC,50⁰ + 90 + ∠c = 180⁰140⁰ + ∠c = 180⁰∠c = 180⁰-140⁰In ∆MBC,∠c = 40⁰∠m = 90⁰∠m + ∠b + ∠c = 180⁰90⁰ + ∠b + 40⁰ = 180⁰130⁰ + ∠b = 180⁰∠b = 180⁰-130⁰∠b = 50⁰ | |