Use a double-angle identity to find the exact value of the expression.2 cos2 75° - 1
A. 
B. - 
C. 
D. - 
Answer: B
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Provide an appropriate response.The speed you must travel for a given amount of time depends on the distance you must cover.(a)Write a function r(d) for the speed if the time is 5 hours and the distance covered is d.(b)What is the domain of this function out of context?(c)What is the domain of this function in the given context?(d)Find r(x), r
and r
,.(e)What happens to the speed if the distance is reduced (divided) by a constant c? Describe using an equation.
What will be an ideal response?
Find the velocity of a particle that has the given acceleration and the given initial velocity.
a(t) = 3k, v(0) = 12i-7j
Solve the equation.Solve 4 sint = -0.658 for t, where t is a real number in the interval 
. Approximate t to 3 decimal places.
A. -0.164 B. -0.153 C. -0.165 D. -0.18
Give the equations of any vertical asymptotes.f(x) = 
A. x = 3 B. x = -3 C. x = 3, x = -3 D. x = 1