Use a product-to-sum identity to rewrite the expression.cos 
sin 
A. 0.5
B. 0.5
C. 0.5
D. 0.5
Answer: C
Mathematics
You might also like to view...
Provide an appropriate response.Use the law of sines to solve the triangle ABC if a = 23, b = 12, and A = 49°. If there are two possibilities, find both solutions. Round sides to four significant digits and angles to the nearest 
A. B = 25.6°, C = 105.4°, c = 29.38; B = 23.2°, C = 107.8°, c = 29.02 B. B = 23.2°, C = 107.8°, c = 29.02 C. B = 25.6°, C = 105.4°, c = 29.38 D. no solution
Mathematics
Solve the equation after making an appropriate substitution.x2/3 - 6x1/3 + 5 = 0
A. {1, 125} B. {-125, -1} C. {1, 5} D. {-5, -1}
Mathematics
Solve the rational equation.
= 7 + 
A. 
B. 
C. 
D. 
Mathematics
Find the indicated sum. Find the sum of the first 9 terms of the geometric sequence: 
, 
, 
, 
, 
, . . .
A. 
B. 
C. 101
D. 
Mathematics