Use half-angle identities to find the exact value of the expression.cos 165°
A. - 
B. - 
C. 
D. 
Answer: A
Mathematics
You might also like to view...
The power generated by a windmill is related to the velocity of the wind by the formula
?
?
where P is the power (in watts) and v is the velocity of the wind (in mph). Find the velocity of the wind when the windmill is generating 200 watts of power. Round yout answer to two decimal places.
?
A. 
B. 
C. ?
D. ?
E. ?
Mathematics
Solve the equation by completing the square.x2 + 5x - 5 = 0
A. 
B. 
C. 
D. {-5 - 3
, -5 + 3
}
Mathematics
Graph the function.f(x) = x3 + 1x - 5
A. 
B. 
C. 
D. 
Mathematics
Find the product. Leave answer reduced to lowest terms, and assume that all variables have nonzero values.
? 
A. 
B. 
C. 
D. 
Mathematics