In a triangle the ratio of an angle is 3:7:5. find the measure of all angles ?
Answers
Answered by
13
3x+7x+5x=180
15x=180
X=180/15
X=12
3x=3*12=36
7x=7*12=84
5x=5*12=60
So all angles are 36,84,60 respectively
15x=180
X=180/15
X=12
3x=3*12=36
7x=7*12=84
5x=5*12=60
So all angles are 36,84,60 respectively
Answered by
11
Answer:
Let all the angles of a ∆ be 3x, 7x and 5x.
As we know, sum of all Ls of a ∆ = 180°.
Then,
LA+LB+LC=180°
3x+7x+5x=180°
15x=180°
x=12°
LA= 3x = 3×12°
= 36°
LB= 7x = 7 ×12°
= 84°
LC= 5x = 5 × 12°
= 60°
Hence the measurers of all angles are LA= 36°, LB = 84° and LC = 60°.
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