Question

In ∆ABC angle A=40° angle B=70° then angle C =?



A] 110°
B] 70°
C] 60°
D] 90°​

Answer 1

Step-by-step explanation:

the sum of measure of all angle of triangle is 180०

A + B + C = 180

40 + 70 + C = 180

110 + C = 180

C = 180 - 110

C = 70

Answer 2

Solution :-

we know that,

• Sum of all three angles of a ∆ is equal to 180° .

given that ,

→ ∠A = 40°

→ ∠B = 70°

So,

→ ∠A + ∠B + ∠C = 180° { By angle sum property of a ∆}

→ 40° + 70° + ∠C = 180°

→ ∠C + 110° = 180°

→ ∠C = 180° - 110°

→ ∠C = 70° (B) (Ans.)

Hence, value of angle C is equal to 70° .

Learn more :-

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