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