Solve the problem.If f(?) = cos ? and f(a) = - 
, find the exact value of f(a) + f(a + 2?) + f(a + 4?).
A. - 1
B. - 
C. - 1 + 6?
D. 1
Answer: A
Mathematics
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Graph the inequality.5x + y < 6
A. 
B. 
C. 
D. 
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Simplify.7[32 + 5(6 + 4)]
A. 980 B. 301 C. 71 D. 413
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Solve the triangle.a = 60, b = 8, C = 120°
A. c = 70.17, A = 51.8°, B = 8.2° B. c = 64.37, A = 53.8°, B = 6.2° C. c = 67.27, A = 55.8°, B = 4.2° D. no triangle
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Use a calculator to find the approximate value of the expression. Round the answer to two decimal places.cot 
A. 2.21 B. 127.53 C. 127.66 D. 2.08
Mathematics