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find without tables or calculator.(1) sin^2 (22 1/2)- cos^2 (22 1/2) (2) sin 60 cos 30 + sin 30 cos 60 (3) cos(90-y) = sin
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2. 535 views
(1) body is taken to depth of 32km below the surface of the earth.Calculate the percentage decrease in the weight of the body at
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2. 654 views
1) Suppose that a runner on a straight track covers a distance of 1 mile in exactly 4min. what was its average velocity in(i)
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2. 1,290 views
Find all the angles between 0 and, 720 whose tangent is 1/ �ã 3
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2. 1,526 views