Express the sum or difference as a product of sines and/or cosines.sin(6?) - sin(4?)
A. -2 sin(5?) cos ?
B. 2 sin ? cos(5?)
C. 2 sin(5?) cos ?
D. -2 sin ? cos(5?)
Answer: B
Mathematics
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Evaluate the integral.
A. - 
csc 7t cot 7t - 
ln
+ 
+ C
B. 
csc 7t cot2 7t - 
ln
+ C
C. - 
csc 7t cot 7t + 
ln
+ C
D. - 
csc 7t cot 7t - 
ln
+ C
Mathematics
Provide an appropriate response. Solve for B: A = 
h(B + b)
A. B = 
B. B = 
C. B = 2A - bh
D. B = 
Mathematics
Solve the initial value problem.
= 20t(5t2 - 1)3, s(1) = -4
A. s = (5t2 - 1)4 - 260
B. s = 
(5t2 - 1)4 - 4
C. s = 
(5t2 - 1)4
D. s = 
(5t2 - 1)4 - 132
Mathematics
Find a z-score satisfying the given condition.20.1% of the total area is to the right of z.
A. -0.84 B. 0.82 C. 0.83 D. 0.84
Mathematics