Thread: triangle proof

you have an isosceles triangle whose angle is x and the two equal sides are s. show that the area of the triangle is given by A=1/2 s^2 sinx.

I got 1/2 s sinx but i cant get s^2 can someone help? i greatly appreciate it.

Originally Posted by soldatik21

you have an isosceles triangle whose angle is x and the two equal sides are s. show that the area of the triangle is given by A=1/2 s^2 sinx.

I got 1/2 s sinx but i cant get s^2 can someone help? i greatly appreciate it.

Suppose sides of triangle as A,B&C
Side


Area


As
Hence, Area