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in ns Lesa aca Unit 6 > Ta TIME LIMIT: gg intinites"? ‘*' CALCULATOR: allowed "SE fies at te SAVE THIS EXAMINATION. IT IS YOUR PROOF THAT YOU TOOK IT AT THIS TIME. ! /: ug What is the (approximate) degree measure of the angle shown? A) 195° 525°C) «555° D) 885° 915° x ys V4. 585 Cos @ = - g and csc @ is positive.|What is the value of 3 tan 9 - 5 csc 8 . —— rounded to three decimal places? A) -12.329 B) -11.456 C) -6.76 D) -4.146 E) -1.418 What is the value of 3 sin(43° )esc(-787°) - 4 cos(697°) rounded to four Oe Cea Ree decimal places? A) -6.1575. -5.9047 C) -5.5654 0D) -1.4593 ££) 1.5543 Angles R and S are between 0 and radians, cos R = -0.8351 and tan S = 1.9246. Which one of the ollowing is a possible (approximate) value for R + S? | A) 1.674 B) 4.609 €) 5.774 | B) 7.957 E) 9.934 | What is the (approximate) length of side k of triangle BQK where b = 3.12, 5.6% q = 5.62 and Q = 90°? | Re A) 4.56 8) 4.65) 4.67 D} 4.72 8) 4.75 in triangle ABC, a = 3.41, b = 2.14 and c = 5.05. Which one of the following might be angle C to the nearest tenth of a degree? sin 7a na fe 25 | . . A) 128.3° B) 129.1° C) 180.6 D) 132.20 E) 134.8° 8 i The top of a vertical tree broken by the wind hits the ground 20 feet from the 5.03 foot of the tree. The upper and lower portions of the tree remain attached. The upper portion makes an angle of, 35° with the horizontal ground. What was the original height of the tree? | A) 38.4 ft. B) 39.5 ft. c) ao. ft. D) 42.1 ft. E) 43.3 ft. (over) © 1989 Department of Mathematics Colorado State University 
