111. The value of cos15° cos 7 — sin 711 is 2 (a) 1/1 (b) 8 112. The value of sin 50°-sin 70° + sin 10° is (a) 0 (b) 1 C D 12 2 16 (d)

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A: here given exponential and logarithmic function so that will cancel out and ln(e) =1

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A: we solve the question . r^-1 .r=1.

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A:

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