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The value of the expression 2 2 2 2 2 sin 22 sin 68 sin 63 cos63 sin27 cos 22 cos 68 °+ ° + °+ ° ° °+ ° is |
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Answer» sin^2 22+sin^2 68/COS^2 22+cos^2 68+sin^2 63+sin^2 27 sin^2 22+ cos^2 22/sin^2 68+cos^2 68+sin^2 63+sin^227 =1/1+1 =2 in this QUESTION you have TWO know sinA =cos (90-A) cosA=sin (90-A) sin^2 A+cos^2 A=1 |
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