Question

Find the equation of straight lines cutting off an intercept -1 from y axis and

equally inclined to the axis​

Answer 1

Answer:

ANSWER

In △ABC

AB, BC and AC touches the circle at the point P, Q and R respectively.

∴ BC+AP=AC+PB

⟹ 13+7=AC+PB

⟹ AC=20−PB

Perimeter of △ABC=AB+BC+AC

=AP+PB+13+20−PB

=7+13+20=40

∴ Perimeter of △ABC is 40 cm.