Use the given information to find the exact value.tan A = 
, ? < A < 
; cos B = - 
, 
< B < ?
Find tan (A + B).
A. - 
B. - 
C. - 
D. 
Answer: C
Mathematics
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Find the series' radius of convergence.
A. 1 B. ?, for all x C. 2 D. 0
Mathematics
Use the distributive property to multiply. Then, if possible, simplify the resulting expression.4(a + b)
A. 4ab B. 8ab C. 4a + 4b D. 4a + b
Mathematics
Simplify the expression. Assume that variables can represent any real number.
A. 
B. - 
C. 
D. - 
Mathematics
Answer the question.How can the graph of f(x) = - 
+ 1 be obtained from the graph of y = 
?
A. Reflect it across the y-axis. Shift it 1 units up. B. Reflect it across the x-axis. Shift it 1 units down. C. Reflect it across the y-axis. Shift it 1 units down. D. Reflect it across the x-axis. Shift it 1 units up.
Mathematics