Find the exact value by using a half-angle identity.cos 15°
A. 
B. 
C. 
D. 
Answer: B
You might also like to view...
Provide an appropriate response.It can be shown that 
= 0 for c > 0. Find the smallest value of N such that 
for all 
if 
and 
style="vertical-align: -4.0px;" /> A. 13 B. 11 C. 12 D. 10
Find the exact area under the curve between the indicated values of x.y = x2 + 1; between x = 0 and x = 1
A. 
B. 
C. 
D. 
Use the table to determine the probability. Round your answer to three decimal places if necessary.The following table displays the age, in years, and sex for the residents of a retirement home.Age (years)? 60-69 70-79 Over 79Total Male0.19?0.10.11?? Female0.20.1?0.3?? Total???1What is the probability that a resident is in the age group 60-69?
A. 0.42 B. 0.405 C. 0.39 D. 0.37
Use the quadratic formula to solve the equation. If the equation has no real number solution, so state.6x2 + 12x + 4 = 0
A. x = 
B. x = 
C. x = 
D. x = 