Analyze Math Trigonometry – Contains free Trigonometry tutorials and problems. Uses Java applets to explore important topics interactively. An important student resource for any high …

This book covers the major topics within the study of trigonometry, including vectors and their applications. At the University of Minnesota, this material is 75% of the PreCalculus II course, …

Trigonometric Identities. sin2x+cosx=1 1+tan2x= secx. 1+cot2x= cscx. sinx=cos(90−x) =sin(180−x) cosx=sin(90−x) = −cos(180−x) tanx=cot(90−x) = −tan(180−x) Angle-sum and …

sin sin = 2 sin cos. cos cos. sec • cot. cos = tan. sin cos = sin. cos sin = sin. cos cos = cos. sin sin = cos.

We are asked to nd all complex fourth roots of 4. These are all the solutions (including the complex values) of the equation x4 = 4. nonzero complex number z has exactly n distinct nth …

The functions cos(θ) and sin(θ) are defined to be the x and y coordinates of the point at an angle of θ on the unit circle. Therefore, sin(−θ) = − sin(θ), cos(−θ) = cos(θ), and sin2(θ) + cos2(θ) = 1.

Given the unit circle, x 2 + y 2 = 1 , where x = cos and y = sin , we can define the three Pythagorean identities below. Each negative angle identity is based on the symmetry of the …