Question

Two angles of triangle are 60 degree and 30 degree find the third angle
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Answer 1

Answer:

60°+30°+x =180° ( angle sum property of a triangle)

90° + x =180°

x =90°

Answer 2

Answer:

sum of angles of ∆ = 180°

=> <A+<B+<C = 180°

=> 60°+ 30°+ <C = 180°

=> 90°+<C = 180°

=> <C = 180°- 90°

=> <C = 90°

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