13,19 hPoblems 13-20, P = (x, y) is the point on the unit circle that corresponds to a real number t. Find the exact values of the six trigonometriccomplement of a, it was natural to write the cosine of a as sin co a.The names of the remaining functions came about as follows. If athe domain, there is exactly one element y in the range.shadow), referring to the use of the tangent in solving heightSECTION 6.2 Trigonometric Eunctions: Unit Circle Approach 507adow ame for the tangent is umbra versa (meaning turnedproblems with shadows.and B are complementary angles, then cos aAsin B. Because ß is theiredProbably for reasons involving ease of pronunciation, the co migratedto the front, and then cosine received a three-letter abbreviation tomatch sin, sec, and tan. The two other cofunctions were similarlytreated, except that the long forms cotan and cosec survive to thisday in some countries.ough,x,y)-y*)LOwnFigure 34Os of5. What point is symmetric with respect to the y-axis to the.(p. A14)Athagorean Theorem states that1 V3? (pp. 13-15)point(n 51-54)False For a function y = f(x), for each x in6. If (x, y) is a point on the unit circle in quadrant IV and ifV3, what is y? (p. 36)x =p 49-51)n triangles are similar, then corresponding anglesand the lengths of corresponding sides are(pp. A16-A19)2areConcepts and Vocabulary1 Multiple Choice Which function takes as input a realtumber t that corresponds to a point P = (x, y) on the unitcircle and outputs the x-coordinate?(a) sine11. For any angle 0 in standard position, let P = (x, y) bethe point on the terminal side of 0 that is also on the circleifx2 + v? = r2 Then, sin 0 =and cos 0 =(b) cosine(c) tangent( secantTTA The point on the unit circle that corresponds io ) =P =is12. Multiple Choice The point on the unit circle that correspondsato 0 =- isA The point on the unit circle that correspends to 60 =1s4(а)(b)P =(d). True or False Exact values can be foundangle.the sine of any(c)Sill Buildingmcions of t.2 V2115.5' 516.14.20.1w. ( )18.2 2

Name: 13,19 hPoblems 13-20, P = (x, y) is the point on the unit circle that
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Description: 13,19 hPoblems 13-20, P = (x, y) is the point on the unit circle that corresponds to a real number t. Find the exact values of the six trigonometriccomplement of a, it was natural to write the cosine of a as sin co a.The names of the remaining functi