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Conditional trigonometric identity
←Created page with 'A '''conditional trigonometric identity''' is a
trigonometric identity that holds if specified conditions on the arguments to the trigonometric functions are satisfied.<ref> Er. K. C. Joshi, ''Krishna's IIT MATHEMATIKA''. Krishna Prakashan Media. Meerut, India. page 636.</ref> Typically such a condition says <math display=inline> \alpha+\beta+\gamma = \pi \text{ radians} = 180^\circ = \text{half circle,} </math> so that <math display= inline> \alpha,\b...'