In this section, we will see the half angle formulas of sin, cos, and tan Half angle identities to evaluate trigonometric expressions this video gives some half angle identities and show how they can be used to solve some trigonometric equations. We know the values of the trigonometric functions (sin, cos , tan, cot, sec, cosec) for the angles like 0°, 30°, 45°, 60°, and 90° from the trigonometric table.
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Formulas for the sin and cos of half angles
Evaluating and proving half angle trigonometric identities.
Half angle trig identities are powerful tools that help us deal with these tricky situations
