Use the properties of the trigonometric functions to find the exact value of the expression. Do not use a calculator.sin2 50° + cos2 50°
A. -1
B. 0
C. 1
D. 2
Answer: C
Mathematics
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Graph the pair of parametric equations with the aid of a graphing calculator.x = 7t - 7 sin t, y = 7 - 7 cos t, -2? ? t ? 2? 
A. 
B. 
C. 
D. 
Mathematics
Solve the problem.A serving of filleted fish is generally considered to be 
lb. How many servings can be prepared from 6
lb of flounder fillet?
A. 23 servings
B. 2
servings
C. 18
servings
D. 19
servings
Mathematics
Find the missing factor.x2 + 13x + 42 = (x + 7)( )
A. (x - 7) B. (x - 6) C. (x + 7) D. (x + 6)
Mathematics
Solve the system of equations using the addition method.4x - 2y = 4-6y = 12 - 12x
A. (0, 0) B. (4, -2) C. infinite number of solutions D. no solution
Mathematics