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Trigonometry Formulas Involving Sum/Difference Identities
Finding the correct values of trig Identities like sine, cosine and tangent of an angle is most of the time easier if we can rewrite the given angle in the place of two angles that have known trigonometric identities or values.
Trigonometry Formulas involving Double Angle Identities
The double angle formulae are used when we need to simplify complicated trigonometric equations. The functions of double angles sin2A, cos2A and tan2A are called double angle formulae.
With these basic identities it is better to remember the formula.
Trigonometry Formulas involving Half Angle Identities
Special cases of the sum and difference formulas for sine and cosine gives what is known as the double‐angle identities and the half‐angle identities. First, using the sum identity for the sine,
Trigonometry Formulas involving Product identities
The sum, difference and product formulas involving sin(x), cos(x) and tan(x) functions are used to solve trigonometry questions through examples and questions with detailed solutions.