Question

Q4. Angles of a triangle are in
the ratio 3:1:5, the smallest
angle of a triangle is:
O
20°
O 100
O 60°
O 40°​

Answer 1

Answer:

20° which was having ratio as 1

Step-by-step explanation:

Let just take x

n put x after every ratio

using angle sum property of triangle:

sum of all angles in a ∆ is 180°.

3x+1x+5x=180°

9x=180°

transverse 9 in rhs from lhs

x=180/9

x=20°

3x=3×20=60°

1x=1×20=20°

5x=5×20=100°

SO, THE SMALLEST ANGLE AMONG THEM IS 20° i.e. 1x

Answer 2

Step-by-step explanation:

let the ratios be x

3x + x + 5x = 180⁰

9x = 180⁰

x = 180/9

x = 20⁰

angle 3x = 60

angle x = 20

angle 5x = 100

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