Sine, cosine and tangent are the primary trigonometry functions whereas cotangent, secant and cosecant are the other three functions. The trigonometric identities are based on all the six trig functions. Check Trigonometry Formulas to get formulas related to trigonometry. Table of Contents: Definition List of Trig Functions Reciprocal Identities Learn the formulas and graphs of sin, cos and tan, the three basic trigonometric functions, with examples and videos. Find out how to use the sine, cosine and tangent rules and the Pythagoras identity to solve problems involving right-angled triangles. Pengertian Trigonometri Kesebangunan dan Rumus Trigonometri Dasar Sudut Istimewa Sudut Berelasi pada Kuadran Sudut Negatif Sudut Lebih dari 360 Derajat Identitas Trigonometri Persamaan Trigonometri Aturan Sinus & Aturan Cosinus Contoh Soal dan Pembahasan Pengertian Trigonometri We know that sin, cos, and tan are the reciprocals of cosec (or csc), sec, and cot functions. Thus, we can derive 3 more formulas related to sin, cos, and tan. sin A = 1/csc A (or) csc A = 1/ sin A. cos A = 1/sec A (or) sec A = 1/cos A. tan A = 1/cot A (or) cot A = 1/tan A. Learn the sine, cosine and tangent ratios of sides of a right triangle and how to identify the opposite, adjacent and hypotenuse sides using SOHCAHTOA. See examples, practice problems and a video lesson on the sine ratio. Basic Identities: tan( tan( cot( sin( ) ) = cos( ) ) = cot( ) ) = tan( ) cot( sec( csc( Pythagorean Identities cos2( ) + sin2( ) = 1 sec2( ) − tan2( ) = 1 ) ) cos( = sin( ) ) = 1 cos( ) ) = sin( ) csc2( ) − cot2( ) = 1 Double Angle Identities sin(2 ) = 2 sin( ) cos( ) cos(2 ) = 1 − 2 sin2( ) cos(2 ) = 2 cos2( ) − 1 cos(2 tan(2 1ojNk.

sin cos tan rules