Find the exact value under the given conditions.Given sin ? = 
, with ? in quadrant I, and cos ? = 
, with ? in quadrant I. Find cos (? + ?).
A. - 
B. 
C. 
D. 
Answer: B
Mathematics
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Find the series' radius of convergence.
A. ?, for all x B. 2 C. 0 D. 1
Mathematics
Perform the indicated operation. Simplify, if possible.
+ 
- 
A. 
B. 
C. 
D. 
Mathematics
Evaluate the numerical value of the formula with the given replacement values.P = 2 ? L + 2 ? W
L = 7, W = 9
A. P = 32 B. P = 126 C. P = 16 D. L = 32
Mathematics
Solve the problem.Two angles of a triangle are 10° and 20°. What is the measure of the third angle?
A. 30° B. 330° C. 60° D. 150°
Mathematics