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Earn +20 ptsQ: What branch of mathematics is concerned with sines and cosines?
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How do you simplify csc theta -cot theta cos theta?
For a start, try converting everything to sines and cosines.
Altitude of right triangle with only one side known?
Law of sines or cosines SinA/a=SinB/b=SinC/c
How do you find a missing side of a triangle without a right angle?
Having sufficient angles or sides one can use either, The Law of Sines, or, The Law of Cosines. Google them.
Is 1 plus sinX divided by 1 plus cscX equal to sinX?
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How do you simplify tan ( - x ) cos ( - x )?
It helps, in this type of problem, to convert all trigonometric functions to sines and cosines. As a reminder, tan(x) = sin(x) / cos(x).
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