Question

please answer this question​

Answer 1

Answer:

a) 290

Step-by-step explanation:

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Answer 2

Answer:

(a) 290°

Step-by-step explanation:

Given,

PQ || RS

from figure it can be concluded that CO is also parallel to PQ and RS.

see construction in my handmade diagram given above.

As OC || PQ.

<1 = 40°

and

OC || RS

<2 = 30°

therefore <AOB = 70°

and <a = 360° - 70°

=> 290°