A point on the terminal side of angle ? is given. Find the exact value of the indicated trigonometric function.(3, 4)Find cos ?.
A. 
B. 
C. 
D. 
Answer: B
Mathematics
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Replace the polar equation with an equivalent Cartesian equation.r2 = 30r cos ? - 6r sin ? - 9
A. (x - 15)2 + (y + 3)2 = 225 B. (x - 15)2 + (y + 3)2 = 9 C. 30x - 6y = 9 D. (x + 30)2 + (y - 6)2 = 9
Mathematics
Toothpicks can be arranged to form triangles as shown below. How many toothpicks are required to form a triangle with ten toothpicks on a side?
Mathematics
Solve the equation.-10x = -100
A. -90 B. -10 C. 90 D. 10
Mathematics
Find the ordered pair for the vertex.y = 4x2 + 24x + 34
A. (3, 2) B. (-2, -3) C. (-3, -2) D. (2, 3)
Mathematics