precalc3-trig

precalc3-trig - Trigonometry Review Problems 1. Angles, Arc...

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Unformatted text preview: Trigonometry Review Problems 1. Angles, Arc Lengths and Areas (a) Suppose that an angle measuring radians subtends an arc of a circle of radius r units. What is the length of that arc? What if the angle measured degrees? (b) Suppose that an angle measuring radians subtends a sector of a circle of radius r units. What is the area of that sector? What if the angle measured degrees? 2. Trigonometry via Right Triangles and the Unit Circle You should be comfortable computing trigono- metric functions using both right triangles and the unit circle. (a) For what values of x is sin x = 0? (b) For what values of x is cos x = 0? (c) How can we simplify sin( x + 2 )? (d) How can we simplify cos( x- 6 )? 3. Use the symmetry of the unit circle to find the values of each of the following. (a) sin- 4 (b) cos 2 3 (c) tan 11 6 (d) sin 13 4 4. Find each of the following. (a) sin- 1 3 2 !...
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