Question

in an isosceles triangle if the measure of unequal side is 110 find the measure of unequal sides​

Answer 1

Step-by-step explanation:

Consider any triangle ΔABC.

In right triangle ΔABD,

sinθ=BDAB

BD=ABsinθ

The area of this triangle is easy right?

ar(ΔABC)=12BD⋅AC

ar(ΔABC)=12AB⋅ACsinθ

We can generalise this as follows, the area of a triangle with consecutive sides a,b and included angle θ is 12absinθ.

Apllying this to your question,

A=1220×20×12–√

A=1002–√ cm2