Multiply and simplify.
? 
A. 
B. 3
C. 
D. 
Answer: B
Mathematics
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Express the trigonometric function in terms of the same function of a positive acute angle.cos 405°
A. -cos 45° B. -cos 90° C. cos 45° D. cos 90°
Mathematics
Perform the indicated operation and write the answer in lowest terms. 4
÷ 3
A. 1
B. 1
C. 2
D. 1
Mathematics
Verify the identity.sin 4? = 2 sin2? cos2?
What will be an ideal response?
Mathematics
Graph the ellipse.64x2 + 25y2 = 1600
A. 
B. 
C. 
D. 
Mathematics