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

(A) (0, √2) 

(B) (1,2) 

(C) (√2,3) 

(D) (2√2, 3√2)

1 Answer

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Best answer

(A) (0, √2) , (B) (1,2) 

From equation (i) and (ii)

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