Let PQRS be a quadrilateral in a plane, where QR = 1, PQR = QRS = 70°, PQS = 15° and PRS = 40°. If RPS = °, PQ = and PS = , then the interval(s) that contain(s) the value of 4 ° is/are

JEE Advanced 2022 Mathematics question

Let be a quadrilateral in a plane, where , , and . If , and , then the interval(s) that contain(s) the value of is/are

Answer: (A),(B)

In triangle : , , so and . In triangle : , , so

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Question ID VK-034016