b sin b cos 4 4 In Exercises 6170 use a calculator to find t

b. sin b. cos 4 4. In Exercises 61-70, use a calculator to find the value of the trigonometric function to four decimal places 61. sin 0.8 63. tan 3.4 62. cos 0.6 64. tan 3.7 66. sec 1 65. csc 1 67. cos 10 69. cot 12 Practice Plus 68. sin 10 70. cot 18

Solution

(61) sin(0.8)=0.7173

(62) cos(0.6)=0.8253

(63) tan(3.4)=0.2643

(64) tan(3.7)=0.6247

(65) csc(1)=1.1883

(66) sec(1)=1.8508

(67) cos(pi/10)=0.9510

(68) sin(3pi/10)=0.8090

(69) cot(pi/12)=3.7320

(70) cot(pi/18)=5.6712