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Let's do this question in the figure cupie is parallel to Islam, all right, and we need to find the

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value of it, which is this angle over here.

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Now, pause the video, give it a try, and then let's do it together.

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All right.

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We are back.

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I hope you have given it a try.

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Let's do it together.

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It's given that cupie is parallel to this are these two lines are parallel.

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Let's construct a line over here such that in is parallel to cupie and it'll be parallel to S.R..

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Right.

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Because these two lines are parallel to each other, if any, parallel to one of them and will be parallel

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to the other as well.

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All right.

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So this line over here is parallel to both cupie and S.R..

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All right.

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Now let's divide this angle it into a one and a two.

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Right.

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Aspinall Construction with Ehle.

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We have divided into two angles, even Annita.

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Now, you can see over here that is equal to A1 plus A2.

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All right.

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Now, A1 will be equal to this angle over here, which is PKU D, right.

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Because these two angles are alternating angles.

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Right.

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B and are parallel and Cutey is acting as the transversal.

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Therefore A1 is equal to 60 degrees.

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Right.

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Because they are alternating angles and t cupie is equal to.

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Sixty degrees.

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All right, let's move on now to will be equal to anxiety, as are these two angles are also alternate

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interior angles, white because it is parallel to Lyness, R and D is acting as the transversal right.

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Therefore, a two will be equal to thirty degrees.

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Right.

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Because it is equal to Angle DSR.

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All right, and he has given us 30 degrees over here, therefore we know is equal to A1 plus A2 therefore

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is equal to 60 plus 30, which is equal to 90 degree level.

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The correct answer is option C, that's 90 degrees.