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In the given figure, RS is a diameter of the circle. NM is parallel to RS and ∠MRS = 29°. Calculate : ∠NRM

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Question

In the given figure, RS is a diameter of the circle. NM is parallel to RS and ∠MRS = 29°. Calculate : ∠NRM

Sum
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Solution


Also, RS || NM

∴ ∠NMR = ∠MRS = 29°   ...(Alternate angles)

∴ ∠NMS = 90° + 29° = 119°

Also, ∠NRS + ∠MS = 180°

(Pair of opposite angles in a cyclic quadrilateral are supplementary)

`=>` ∠NMR + 29° + 119° = 180°

`=>` ∠NRM = 180° – 148°

∴ ∠NRM = 32°

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Chapter 17: Circles - Exercise 17 (A) [Page 259]

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Selina Concise Mathematics [English] Class 10 ICSE
Chapter 17 Circles
Exercise 17 (A) | Q 25. (ii) | Page 259

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