Question

in the give figure , if the angles a and b are in the ratio 2 : 3, then the angle c is
a}90°
b}126°
c}144°
d} obtuse angle​

Answer 1

the answer is 90 as opposite angles are always equal

Answer 2

Answer:

a = 2x , b = 3x

a + b = 90⁰

2x + 3x = 90⁰

5x = 90⁰

x = 18

so, a = 2x = 2×18 = 36⁰

b = 3x = 3×18 = 54⁰

b + a + c = 180⁰(linear pair)

54⁰ + 36⁰ + c = 180⁰

90⁰ + c = 180⁰

c = 180⁰-90⁰

c = 90⁰

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