There are many careers that use trigonometry:
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Use the trigonometric relations and identities.
Trigonometric identities are trigonometric equations that are always true.
because its a fraction problem
They are true statements about trigonometric ratios and their relationships irrespective of the value of the angle.
There are several topics under the broad category of trigonometry. * Angle measurements * Properties of angles and circles * Basic trigonometric functions and their reciprocals and co-functions * Graphs of trigonometric functions * Trigonometric identities * Angle addition and subtraction formulas for trigonometric functions * Double and half angle formulas for trigonometric functions * Law of sines and law of cosines * Polar and polar imaginary coordinates.