Question

Q.No.8. Find the value of y in the given triangle

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Answer 1

Answer:

55 degrees

Step-by-step explanation:

In this △ ,

70+y+y=180

=>2y=110

=>y=55 degrees

Answer 2

Answer:

In a cyclic quadrilateral , The sum of opposite angles is 180

⟹4x+4+2y+4=180

∘

2x+y+4=90

2x+y=86

y=86−2x and 5x+15+y+10=180

∘

5x+y+25=180

5x+y=155

y=155−5x

⟹86−2x=155−5x

5x−2x=155−86

3x=69

x=23

y=86−2(23)

y=40