Question

find the measure of third angle if the two angle are of 30 degree and 40 degree

Answer 1

GivEn:

• Two angles of a triangle are 30° and 40°.

To find:

• Measure of third angle?

Solution:

☯ Let measure of third angle be C°.

We know that,

★ A° + B° + C° = 180°

Here,

• A° = 30°
• B° = 40°

Therefore,

⇒ 30 + 40° + C° = 180°

⇒ 70° + C° = 180°

⇒ C° = 180° - 70°

⇒ C° = 110°

∴ Hence, The measure of third angle is 110°.

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More to know:

• Area of triangle = ½ × base × height
• Heron's Formula = √s(s - a)(s - b)(s - c)
• Sum of all angles of a triangle is 180°.

Answer 2

Answer:

Hello friend

find the measure of third angle if the two angle are of 30 degree and 40 degree

here is your answer given below-

A+B+C=180°

In simple words we all know that together the

three sides of the triangle form 180°

Here, we have the measure of A and B.

A= 30°

B= 40°

30°+40°

= 70°

Now we got the sum of A and B, to get the final answer we have to subtract the sum of A and B

i.e 70°

measure of the third side of the triangle= 180°-70°

Measure = 110°

The measure of the third angle of the triangle is 110°.