Find the exact value of the trigonometric expression without the use of a calculator.sin 205° cos 85° - cos 205° sin 85°
A. - 
B. - 
C. - 
D. 
Answer: D
Mathematics
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Find an equation of a parabola satisfying the given conditions.Focus at (2, 6), directrix x = -4
A. (x - 2)2 = 12(y - 6) B. (x - 6)2 = 12(y + 1) C. (y - 6)2 = 12(x + 1) D. (y - 6)2 = 12(x - 2)
Mathematics
Evaluate the expression.
A. 1 B. 10 C. 5 D. 20
Mathematics
Use the given information to find the exact value of the trigonometric function.cos ? = 
, ? lies in quadrant IV
Find cos 
.
A. - 
B. - 
C. 
D. 
Mathematics
Find the sum, regrouping when necessary.
A. 9660 B. 10,760 C. 9750 D. 10,650
Mathematics