rees) for the angle, begin by angle, and use it to find all solutions between solutions by adding .Then represent all and to each value. 4. Graphically, each solution will appear as either an point of for a single graph, or a of two graphs. EXERCISES For each of the following equations, solve for (a) all degree solutions and (b) 0 if 0° e< 360°. Do not use a calculator. 5. cos 0= 0 PLanpts 6. cos 0 -1 V2 V3 7. sin 0 = 8. cos 0 = 2 1oOE.7 9. tan e = V3 10. cot 0 = -1 For each of the following equations, solve for (a) all radian solutions and (b) 0Sx 2T. Use a calculator to approximate all answers to the nearest hundredth. oin 71 75

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Ratios

A ratio is a comparison between two numbers of the same kind. It represents how many times one number contains another. It also represents how small or large one number is compared to the other.

Trigonometric Ratios

Trigonometric ratios give values of trigonometric functions. It always deals with triangles that have one angle measuring 90 degrees. These triangles are right-angled. We take the ratio of sides of these triangles.