Use the fact that the trigonometric functions are periodic to find the exact value of the expression. Do not use a calculator.tan 
A. 
B. 1
C. 
D. -1
Answer: B
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Solve.If an object is dropped off a cliff, after 7 seconds it will have fallen 
feet, ignoring air resistance. Express this distance in standard form, without exponents.
A. 65 ft B. 1568 ft C. 784 ft D. 39 ft
Find the length of each side of the triangle ABC and determine whether the triangle is an isosceles triangle, a right triangle, both, or neither. Select the correct answer.
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Write the equation of the line whose graph is shown.
A. y = x + 5 B. y = - x - 5 C. y = x - 5 D. y = - x + 5
Decide whether the graph of the equation opens up, down, to the left, or to the right; and whether it is wider, narrower, or the same shape as the graph of 
(or 
).x = 
y2 + 2y - 1
A. To the right; narrower B. To the left; wider C. To the right; wider D. To the left; narrower