Addition and Subtraction Formulas for Sine and Cosine: In a right triangle with legs a and b and hypotenuse c, and angle alpha opposite side a, the trigonometric functions sine and cosine are defined as sin(alpha) = a/c, cos(alpha) = b/c
Complex numbers in polar coordinates: r^2 = a^2 + b^2; (r is the magnitude, modulus or absolute value of the complex number); (theta is the argument); tan(theta) = b/a; theta = arctan(b/a); cos(theta) = a/r, sin(theta) = b/r so a=rcos(theta) and b=rsin(theta); complex number written as: z=real part + imaginary part; z = rcos(theta) + rsin(theta)i = r(cos(theta) + isin(theta)) = e^i(phi) - Euler's formula
Trigonometric functions of arcs from 0 to ± Calculation of values of trigonometric functions, Trigonometric reduction formulas - the reference angles, Basic relationships between trigonometric functions of the same angle
WHAT ARE THE SIX FUNDAMENTAL TRIGONOMETRIC RATIOS? Trigonometric formulas are the six basic trigonometric ratios which establish the ratios of the lengths of the sides with each other in a right angled triangle. the three fundamental trigonometric ratios as sin, cos and tan, which their reciprocal trigonometric ratios cosec, sec and cotan are derived trigonometric ratios.
formulas sin cos tan
Right Triangles - Sin Cos Tan (Soh Cah Toa) Trig. Riddle Practice Worksheet
Right Triangles - Sin Cos Tan (Soh Cah Toa) Trigonometry Riddle Practice Worksheet This is a 15 question right triangle worksheet that requires students to use sine, cosine and tangent to find the missing sides or the missing angles.