Trigonometry

acute angle angle of elevation angle opposite angular speed Arccos Arcsin Arctan axes c d L Ctn called circle congruent angles coördinates cos² cosine law cotangent Ctn c d curve denoted determine direction draw equal Example EXERCISES figure Find the angle Find the distance force formulas geometry given angle graph hence hypotenuse included angle law of cosines law of sines law of tangents length mantissa method negative obtuse angle perpendicular plane polar triangle positive angle Proj Prop Prove Quad radius read as printed read co-function resultant revolutions per minute right angle right triangle rotation sec² segment side opposite simple harmonic motions sin² spherical triangle subtends subtract tabular difference tan² terminal side theorem tion trigonometric functions unit velocity vertex whence x-axis y-axis