Question

.) Find x in each of the following ​

Answer 1

Answer:

1)...5x+ 8x + 2x =180

15x = 180

x=. 12

now put x then you will get your answer❤️

Answer 2

Answer:

(i) 12

(ii) 40

(iii) 10

Step-by-step explanation:

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We know that,

• The sum of the three angles of any triangle is equal to 180 degrees.

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Solution:-

(i)

→ ∠A + ∠B + ∠C = 180°

￫ 5x + 8x + 2x = 180°

￫ 15x =180°

￫ x = 180/15

￫ x = 12

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(ii)

∠ B = 180°- 120°

= 60°

Now,

∠A + ∠B + ∠C =180°

￫ x + 60° + x + 40° = 180°

￫ 2x + 100° = 180°

￫ 2x = 180°-100°

￫ 2x =80°

￫ x = 80/2

￫ x = 40

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(iii)

Given,

∠B = 90°

Now,

∠A + ∠B + ∠C =180°

￫ 4x + 90° + 5x =180°

￫9x = 180° - 90°

￫ 9x = 90°

￫ x = 90/9

￫ x = 10