Question

Solve this Question.​

Answer 1

Step-by-step explanation:

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Answer 2

Answer:

option 1 is correct answer

Step-by-step explanation:

In cyclic quadrilateral, sum of opposite angles is 180°.

7x+5°+3y-5°=180°

7x+3y-180°=0

7x+3y-180°=0[EQ.1]

4y+20°+4x°=180°

4x°+4y+20°-180°=0

4x+4y-160°=0

4(x+y-40°)=0

x+y-40°=0 [EQ.2]

From EQ. 2 we substitute the value of x=40-y and place it in EQ.1

7(40-y)+3y°=0

280-7y+3y-180°=0

100-4y=0

y=25°

now we substitute value of y=25 in EQ.2

x+25-40=0

x=15°