If an ant is 50 feet away from a tree growing straight up, and the ant has to look up at an angle of 70 degrees to see the top of the tree, how tall is the tree? Select the closest answer.

What

is the period of y = 3cos (8x + π/2) + 5?

Solve the system: x = y² + 4y – 5, x = 0.

Solve

for x: (1/3)

On a circle of radius 4 and center (0, 0), find the x and y coordinates at angle 180 degrees (or π in radian measure).

The horizontal asymptotes of f(x) = \frac{x - 10}{ x^{2} - 12x + 20} are:

What

is the exact value of sin (15 degrees)?

The graph of y = 4sin (3x + 2) + 1 has amplitude of: