Use the information given about the angle ? to find the exact value of the indicated trigonometric function.cos ? = - 
, sin ? > 0Find cos 
.
A. - 
B. 
C. 
D. - 
Answer: C
Mathematics
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Evaluate the function at the given value of x.f(x) = 
, f(-2)
A. -3 B. 0 C. 1 D. 3
Mathematics
Solve the problem.Suppose that 
= 2. Find 
and 
.
A. 6; -2
B. 12; 
C. 12; -2
D. 8; 2
Mathematics
Estimate the indicated component or components of the vector. Round to an appropriate number of significant digits.
= 49.7, ? = 64.5°; Find the horizontal and vertical components of v.
A. horizontal = 21.4, vertical = 44.9 B. horizontal = -21.4, vertical = -44.9 C. horizontal = -44.9, vertical = -21.4 D. horizontal = 44.9, vertical = 21.4
Mathematics
Convert the radical expression to its rational exponent form and then simplify. Assume that all variables represent positive numbers.
A. x5/6y5/6 B. x5/6y6/5 C. x6/5y6/5 D. x6/5y5/6
Mathematics