Question

the angles of ∆ are (×_40 ) ( × -20 ) and( 1/2 × - 90 °) find value of × ²​

Answer 1

Answer:

x^2 = 17424

Step-by-step explanation:

(x-40), (x-20) (x/2 - 90) are angles of triangle

then their sum will be 180°

x - 40 + x - 20 + x/2 - 90 = 180

5x/2 - 150 = 180

5x/2 = 330

x = 660/5

x = 132

x^2 = 132^2 = 17424