EvenAnswersChap7

EvenAnswersChap7 - EVEN ANSWERS, Chapter 7 7.2: 3π +πn 4...

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Unformatted text preview: EVEN ANSWERS, Chapter 7 7.2: 3π +πn 4 20) θ= 30) +πn 2 2π 4π t= , ,π 3 3 no solution 3π θ = 0, 2 42) 48) 50) t= π 7.3: 2) b) cot 65 48′ cos19′ c) sin a) d) π 6 tan 28.13 6) a) b) 3+ 2 2 6− 2 4 10) −3 − 3 3 b) − 2 − 3 cos 63 sin 61 a) 12) 14) 18) a) b) c) 63 65 63 − 16 QII 20) 1 a) b) c) d) e) f) 3 5 4 5 3 4 117 125 44 125 117 − 44 − 22) −2 − 2 10 ≈ −0.92 9 −2 − 2 10 b) ≈ 2.43 5−4 2 c) QIII Identify could be verfied in different ways. a) 40) 7.4: 2) a) b) c) 24 25 7 25 24 7 4) 24 25 7 b) − 25 24 c) 7 There are different ways the identity could be verified. There are different ways the identity could be verified. 3π π π 3π 11π 7π π 5π a) − ,− , , or − ,− ,, 2 222 6 666 θ ≈ 24.30 or 75.70 a) 14) 22) 46) 50) − 7.6: 4) 2 a) b) c) − π 4 2π 3 − π 3 12) a) b) c) π 3 2π 3 π 6 14) a) b) c) 3 2 1 2 not defined 20) 120 169 1519 b) − 1681 240 c) − 161 2 1− x x a) 24) 32) a) π 2 b) c) 34) 54) 56) 62) 64) π − π 2 graph cannot be displayed here x ≈ 2π − 0.6662 or 5.6170, x ≈ π + 0.6662 or 3.8078 t = −0.6013 x ≈ 0.7298, 2.4118, 3.6652, 5.7596 x ≈ 1.5708, 4.7124, 3.9897, 5.4351 3 ...
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EvenAnswersChap7 - EVEN ANSWERS, Chapter 7 7.2: 3π +πn 4...

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