A point on the terminal side of angle ? is given. Find the exact value of the indicated trigonometric function of ?.(- 
, 
) Find cos ?.
A. - 
B. - 
C. 
D. 
Answer: B
Mathematics
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Find the intersection.-2x + 7y = -8, 2y + 2z = 6
A. x = 14t - 58, y = 4t + 6, z = -4t
B. x = 14t + 
, y = 4t + 3, z = -4t
C. x = 14t - 
, y = 4t - 3, z = 4t
D. x = 14t + 
, y = 4t + 3, z = -4
Mathematics
Find the perimeter of the triangle or rectangle as indicated.Find the perimeter of the triangle.
A. P = 27.5 ft B. P = 21 ft C. P = 26 ft D. P = 25 ft
Mathematics
Using the horizontal-line test, determine whether the function is one-to-one.
A. one-to-one B. not one-to-one
Mathematics
Find the value of the unknown coordinate so that the distance between the points is as given.(3, 7.2) and (x, -0.8); distance is 10
A. x = - 3, x = 9 B. x = 1, x = 13 C. x = -2, x = 10 D. x = 0, x = 12
Mathematics