Question

the angle of a triangle are un the rtio of 3:7:8 .find the angles of the triangle

Answer 1

Answer:

we can right the ratio 3x:7x:8x

so, 3x, 7x and 8x are angles of triangle.

3x+7x+8x = 180°

=> 18x = 180°

=> x = 10°

so, the angles are 3x= 3×10° = 30°,

7x= 7×10° = 70°

and, 8x= 8×10° = 80°

Answer 2

Answer :

• First angle = 3x = 3(10) = 30⁰
• Second angle = 7x = 7(10) = 70⁰
• Third angle = 8x = 8(10) = 80⁰

• 30⁰ , 70⁰ and 80⁰ are the angles of triangle

Given :

• The angle of a triangle are in the ratio of 3 : 7 :8

To find :

• The angles of the triangle

Solution :

Given ratio , 3 : 7 : 8

• Let the first ratio of angle be 3x
• Let the second ratio of angle be 7x
• Let the third ratio of anglebe 8x

As we know that ,

• Sum of all angles of a triangle is equal to 180⁰

➼ 3x + 7x + 8x = 180⁰

➼ 18x = 180

➼ x = 180/18

➼ x = 10

Therefore ,

• First angle = 3x = 3(10) = 30⁰
• Second angle = 7x = 7(10) = 70⁰
• Third angle = 8x = 8(10) = 80⁰

Hence, 30⁰ , 70⁰ and 80⁰ are the angles of triangle