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was sesaoe/ erin Unit 4 an TIME LIMIT: 30 minutes CALCULATOR: allowed SAVE THIS EXAMINATION. IS YOUR PROOK THAT -YOU-TOGWIT AT THIS TIME. 76.4 s , Be NC VY gids > sin oa . 7 1. To the nearest tenth, what is the length of side c of triangle ABC where A= 102°, C= 15° and b = 30.4? A) 7.2 B) 7.6 C) 8.0 @) 8.4 E) 8.8 “05 2. %In triangle ABC, a= 3.41, b= 2.15 and c = 5.05. What is X the (approximate) value of angle C? Zs 3 A) 128.3° 129.1° c) 130.6° , P} 132.2° E) 134.8° gos eeteteZ ar 2(e.iy(ranfeos() EAL ERA RES. cost . 3. To the nearest unit, what is the length of gide c of triangle J ABC, where. a= 195, b= 71 and CG = 159°?7.347 7 195 C) 263 B) 260 Cc) 257 D) 254 E) None of these é = sous yeozs- 2 (zi) 199)(cor"t54) 4. Bush pilot Wyoming Smith uses a wilderness meadow surrounded by alder bushes 13 feet tall as a runway. One morning as Wyo took off from the meadow, she estimated that the plane lifted off the ground at a point 169 feet from the bushes and cleared them by 11 feet. To the nearest tenth of a degree, what was the plane's angle of climb? A) 7.42 0B) 7.8°u ( @.1° D) 8.4° E) 8.8° "164 5. Bush and Shrubbs, Inc. prepared drawings of the proposed Paltry Plains subdivision using a scale of 1 inch to 25 yards. The proposed subdivision includes a triangular park with sides of lengths 75 yards, 85 yards and 100 yards. On the drawings, what is the measure of the angle opposite the longest side of the park? A) 80° @) 77° c) 74° D) 74° _E) 68° 100" = 75°# 95"~ z(rBA(eost) 757 es? 100" | aye a 100 2( 7565) 7% ea G5 © 1989 Department of Mathematics Colorado State University 
