Find the exact value under the given conditions.sin ? = 
, 0 < ? < 
; cos ? = 
, 0 < ? < 
Find cos (? + ?).
A. 
B. 
C. 
D. 
Answer: A
Mathematics
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Solve the problem.Find the equation of the tangent line to the curve 
+ 
= 1, at the point 
A. 2y + 3
x = 44
B. 8y + 3
x = 20
C. 8y + 9
x = 11
D. 8y + 9
x = 44
Mathematics
Write the polar equation in terms of x and y.r = 8 csc ?
A. x = 8 B. y = 8 C. y2 = 8 D. x2 + y2 = 8
Mathematics
Determine whether the relation defines y as a function of x. Give the domain.y = x3
A. Function; domain: (-?, ?) B. Not a function; domain: (-?, ?) C. Function; domain: all whole numbers D. Not a function; domain: all whole numbers
Mathematics
Rewrite the expression as an equivalent expression that does not contain powers of trigonometric functions greater than 1.3 sin2 x cos2 x
A. 
sin 2x
B. 
- 
cos 4x
C. 
- 
cos 2x
D. 
- 
cos 4x
Mathematics