Plane Trigonometry

AABC acute angle algebraic angle of depression angle of elevation arc length Asin central angle Chapter Exercises Circular Functions complex numbers coordinates cos² cot 2x cot² csc² derive equal Example Express Figure Find the angle Find the distance Find the value function value given graph half angle formula Hence hypotenuse identities Law of Cosines Law of Sines law of tangents lighthouse logarithm mantissa meters Moivre's theorem multiple newtons number system observed obtain plane polar form prove Pythagorean theorem radian measure radians radius ratio real numbers reference angle right triangle roots scientific notation sec² set of complex ship side adjacent side opposite sin² sinx Solution Solve the following subtended Sum and Difference tan² terminal side triangle ABC trigonometric functions unit circle vector xy-term z₁ Z₂