Question

if two angle of a triangle are of measure 90°and30°,then find third angle

Answer 1

The sum of the interior angles of a triangle are equal to 180o. To find thethird angle of a triangle when the othertwo angles are known subtract the number of degrees in the other two angles from 180o

Answer 2

HEY MATE,___________________↓↓↓


LET THE TRIANGLE BE ABC.

GIVEN, ∠ A = 90°
∠ B = 30°

∵ THE ANGLES OF A TRIANGLE IS 180°

∴ ∠A + ∠B + ∠C = 180°

⇒90° + 60° + ∠C. = 180°

⇒∠C = 180° - 150°

⇒∠C = 30°

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HOPE IT HELPS ☺☺✌