Express the sum or difference as a product of sines and/or cosines.sin(4?) - sin(6?)
A. -2 sin ? cos(5?)
B. 2 cos(4?) cos(5?)
C. -2 sin ?
D. 2 sin(5?) cos ?
Answer: A
Mathematics
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. If 
is perpendicular to 
, prove that ABC is an isosceles triangle.
What will be an ideal response?
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Solve the problem.When 5 times a number is subtracted from 7 times the number, the result is 14. Find the number.
A. 14 B. 9 C. 7 D. 2
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Give the coordinates of the circle's center and its radius.
?
?
A. 
B. ?
C. ?
D. 
E. none of these
Mathematics
Use the roster method to write the given set of numbers. Interpret "between a and b to include both a and b."The first six natural numbers
A. {0, 1, 2, 3, 4, 5} B. {1, 2, 3, 4, 5, 6} C. {0, 1, 2, 3, 4, 5, 6} D. {0, 2, 4, 6, 8, 10}
Mathematics