Question

find the all angles and answer the question fast​

Answer 1

In a triangle,

3y+5y+x=180. (angle sum property)

8y+x=180

x=180-8y..............(i)

3y+x=7y

x=7y-3y

x=4y............(ii)

Putting the value of (ii) in (i)

x=180-8y

4y=180-8y

180=4y+8y

12y=180

y=15

Angles of triangle,

3y=3 x 15

=45

x=4y

=4 x 15

=60

5y=5 x 15

=75

Angles of a triangle are 45,60 and 75.

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