CBSE BOARD X, asked by skartikey848, 1 month ago

In a right angle triangle ∆ pqr , pq + qr = 49 cm and pr = 41 cm. Find the value of Cos^2 r - sin^2 - r ( given that q = 90° )

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Answered by rohitraj1119bfvbfbvj

0

Answer:

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Explanation:

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