Find the exact value of the indicated trigonometric function of ?, if ? is an angle in standard position whose terminal side contains the given point.
; Find cos ?.
A. 
B. 
C. 
D. 
Answer: C
Mathematics
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Use a finite sum to estimate the average value of the function on the given interval by partitioning the interval and evaluating the function at the midpoints of the subintervals.f(x) = x2 - 5 on [-3, 7] divided into 5 subintervals
A. 35 B. 12 C. 7 D. 11
Mathematics
Evaluate the expression.61
A. 
B. 6
C. 1
D. -6
Mathematics
Solve the equation.9x + 4 = 5x + 40
A. x = -9 B. x = -10 C. x = 9 D. x = 10
Mathematics
Solve.The formula for the area of a rectangle is A = LW. Let the trinomial, 
represent the area of a rectangle. Find binomials that could represent the length and width of the rectangle.
A. (x - 1)(x + 3) B. (x + 1)(x + 3) C. (x - 1)(x - 3) D. (x + 1)(x - 3)
Mathematics