Find the exact value of the trigonometric expression without the use of a calculator.cos 75°
A. -
(
+ 1)
B. 
C. - 
D. -
(
- 1)
Answer: B
Mathematics
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Identify the radicand and index.9ab 
A. b2; 2
B. 9ab; 2
C. b2 - 5; 3
D. 
; 3
Mathematics
Solve the problem.Using a phone card to make a long distance call costs a flat fee of $0.88 plus $0.25 per minute starting with the first minute. What is an equation of the form 
for this situation?
A. y = 0.88x + 0.25 B. y = 0.25x + 0.88 C. y = 0.25x D. y = 0.88x
Mathematics
Convert as indicated. If necessary, round to two decimal places.82 kilometers to miles
A. 132.02 mi B. 24.6 mi C. 208.28 mi D. 50.84 mi
Mathematics
Write the expression in terms of its cofunction.csc 
A. csc 0
B. sec 0
C. sec 
D. sin 0
Mathematics