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' cow. RRR Unit 2 TIME LIMIT: 30 minutes 46 CALCULATOR: allowed Bree) Bao \t SAVE THIS EXAMINATION, 17 &l¥SUN PROOF THAT YOU TOOK IT AT THIS TIME. 1. What is the value of 9 cos(-153°}sec(207°) + 4 sin(23°), rounded to three decimal places? 4-544 A) -7,437 B) 2.563 C) 9.391 D) 10.563 E) 14.066 2. Which one of the following: expresses tan & in terms of the reference angle for @ = Sn» A) ~tan F B) tane >) Cc) tan D) -tan¢ 5) E) none of these 3. Let @ = 232° and let @' be the reference angle for 9. Which of the following equations are true? (i) sf¥ eo = sine! (ii) cot.@ = cot e' (iii) sec 6 = sec 8° = A) nene of them B) (i) only C) (ii} only D) (iii) only * E) ody (i) and (ii) mw 4. Angles @ and y are between 0 and 2x radians, sin 6 = -0.0729 and = #'" @' 0756 Gen & cog" = 0.8328, Which one of the following is a possible (approximate) r vdtue for ¢ + yw? %2'46, §.@toe/ cos W.586E A) 0.514 B) 3.801 C) 5.770 DB) 6.943 E) 8.765 : gps?? fh OF Pe 257 co tand 5. Angles P and Q are between 0° and 360°, cos P = -0.2250 and tan Q = 0.2867. Which one of the following is a possible (approximate) value for P + Q? tan Qt§ Reale xz cas A) 93° B) 241° €} 421° D) 447° £) 453° . ' xXe7% _ Ppt AG : ¥ YY 25in @ ; gin OFE tT 5M ¥ cag @= + a .. 2 @ D ; 
