Use the Half-angle Formulas to find the exact value of the trigonometric function. cos 165°

A.
B. - 
C.
D. - 


Answer: D

Mathematics

You might also like to view...

Using Green's Theorem, calculate the area of the indicated region.The area bounded above by y = 4x and below by y = 3x2

A.
B.
C.
D.

Mathematics

Solve the problem.A sensor light installed on the edge of a home can detect motion for a distance of  in front and with a range of motion of  Over what area will the sensor detect motion and become illuminated? Round to the nearest hundredth.

A. 21,771.02 ft2 B. 21,770.92 ft2 C. 10,885.46 ft2 D. 10,885.36 ft2

Mathematics

Perform the indicated operations and simplify the result. Leave the answer in factored form. - 

A.  
B. 1
C.  
D.

Mathematics

Evaluate as requested.Given that h(x) = 6x - , find h(-x).

A. 6x - 
B. -6x - 
C. -6x - 
D. -6x + 

Mathematics