Use trigonometric identities to solve each equation in the interval [0, 2?]1 + cos x = 2 sin2 x
A. 
B. 
C. 
D. 
Answer: B
Mathematics
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Solve the problem.The standard formula for the tangent of the difference of two angles is 
Derive the formula.
What will be an ideal response?
Mathematics
Use reduction formulas to evaluate the integral.
A. 
sec 5x tan 5x + 
ln
+ C
B. 
sec2 5x tan 5x + 
ln
+ C
C. 
sec 5x tan 5x - 
ln
+ C
D. 
sec 5x tan 5x + 
ln
+ C
Mathematics
Perform the operations indicated. Write your answer in simplest form.
+ 
A. - 
B. - 
C. 
D. 
Mathematics
Classify the angle as acute, right, obtuse, or straight.
A. Obtuse B. Right C. Acute D. Straight
Mathematics