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Comprehension for (Q.No.79 to Q.No.80 It...

Comprehension for (Q.No.79 to Q.No.80 It is given that, log sin a log cos og sin Y 4x+ y +7z x y-2z (wherever defined). On the basis of above information, answer the following questions 79. value of sin2o. cos B. siny is equal to (1) 0 (2) 1 (3) (4) N3 80. If o, B, Y E [0, 2T] such that (ou B Y) is maximum then tan-tan p is equal to (1) -1 (2) 0 (3) 1 (4) V3

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