Use sum-to-product identities to rewrite the expression as a product.sin 7x - sin 3x
A. 2 sin 2x
B. 2 sin 5x cos 2x
C. 2 sin 2x cos 5x
D. 2 cos 3x cos 5x
Answer: C
Mathematics
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For a given circle, tangent 
is drawn from external point E so that point T is the point of tangency. Where E-R-S, secant 
intersects that circle at points R and S. Find an expression that is equivalent to 
.
What will be an ideal response?
Mathematics
Use the figure below to find the measure of angle 3.
Mathematics
Add or subtract as indicated. Express the answer as a single polynomial in standard form.(x2 + 1) - (8x2 - 4) + (x2 + x + 4)
A. -8x2 + x + 9 B. -6x2 + x + 9 C. -6x2 - 3x + 5 D. -7x2 + x + 9
Mathematics
Find the exact value. If the value of the function is not defined, write undefined.sec 
A. 0
B. 1
C. 
D. Undefined
Mathematics