Question

find what value of x?the angles x+15,x-15 and x+60 are the angles of a triangle.​

Answer 1

The sum of angles of a triangle is 180°.

$= > x + 15 + x - 15 + x + 60 = 180$

$= > 3x + 60 = 180$

$= > 3x = 180 - 60 = 120$

$= > x = \frac{120}{3} = 40$

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