Question

Find the area of an isoceles triangle whose equal sides are 10cm each and the angle included by two equal sides is 45 degree.

Answer 1

see the pic

a,b,c are sides of the triangle

Pythagoreas theorem:-
square of hypotenuse = square of base + square of perpendicular

Heron's formula:-
s is half of perimeter

formula is given in the pic

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