Question

answer 4 one please send answer soon

Answer 1

Measure of right angles triangle = 90°

1st acute angle = 30°

2nd acute angle = x


x + 30° = 90°

x = 90° - 30°

x = 60°


$\therefore{}$ Measure of 2nd acute angle = 60°

Answer 2

let unknown angle be x
by angle sum property of triangle
90°+30°+x=180
x=180-120
x=60