Solve the problem.Find cos 
, given that cos ? = 
and ? terminates in 0 < ? < ?/2.
A. 
B. 
C. 
D. 
Answer: B
Mathematics
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Solve the equation for y.y2 + 9x - y = 0
A. y = 
B. y = 
C. y = 
D. y = 
Mathematics
Use the product-to-sum identities to rewrite the expression as the sum or difference of two functions.sin 5? sin 3?
A. sin2 15?2
B. 
sin 8? + 
cos 2?
C. 
cos 2? - 
cos 8?
D. 
cos 8? - 
cos 2?
Mathematics
Find the relative extrema of the function and classify each as a maximum or minimum.y = x3 - 3x2 + 5x - 6
A. Relative maximum: (2, 2) B. Relative maximum: (-1, 2) C. Relative minimum: (1, 2) D. No relative extrema exist
Mathematics
Combine like terms whenever possible. Write the result with descending powers.5x8 + 9x6 + 3x8
A. Cannot be simplified B. 17x6 C. 8x8 + 9x6 D. 17x22
Mathematics