Question

9. Find the two unknown angles in the figure.
2y
5y– 30°
2021-22

Answer 1

Answer:

42.8

77

Step-by-step explanation:

2y+5y-30 = 180

7y = 180-30

7y = 150

y= 150

7

y= 21.4

so 2y= 2x21.4

= 42.8

5y-30= 5x21.4-30

= 77

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