Question

solve Question 5 and 6...
solve it Please..please
it,s urgent

Answer 1

5. Let the angle = x

180 - x = 6(90 - x)
180 - x = 540 - 6x
-x + 6x = 540 - 180
5x = 360
x = 360 : 5
x = 72°

6. Let the angle = x

90 - x = 2/5(180 - x) (multiply with 5 for both sides)
450 - 5x = 2(180 - x)
450 - 5x = 360 - 2x
450 - 360 = -2x + 5x
90 = 3x
x = 90 : 3
x = 30°