Question

In cyclic quadrilateral ABCD. If angle A: angle C=4:5 then find angle C​

Answer 1

hi friend!!!!!!! it's very easy

see let me tell u whenever u have ratio consider common multiple x

so opposite angles are 4 x and 5x!!!

now you know right ! opposite angles of cyclic quadrilateral are 180

so write the equation!!!

4x+5x=180

x=20 so angles are 80 and 100