Verify that each equation is an identity.csc2t - cos t sec t= cot2 t
What will be an ideal response?
csc2t - cos t sec t = csc2t - cos t ? 
= csc2t - 1 = cot2t
Mathematics
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A ball is tossed upward and then falls to the ground. Its height after t seconds is given by the function 
. At the time the rock reaches its peak, what can be said about 
?
?
A. is positive.
B. is negative.
C. is zero.
D. None of the above
Mathematics
Use a calculator to solve the equation on the interval [0, 2?). Round the answer to two decimal places.cos x = 0.52
A. 1.02, 2.12 B. 1.02, 2.59 C. 1.02, 5.26 D. 1.02, 4.16
Mathematics
Find a value for the constant a so that f(x) = ax2 models the data. 
A. a = 
B. a = 5
C. a = 9
D. a = 
Mathematics
Use a calculator to find the approximate value of the expression rounded to two decimal places.cos 3°
A. 1.00 B. -1.00 C. -0.99 D. 0.99
Mathematics