Use identities to find the indicated value for each angle measure.sin ? = 
, cos ? > 0
Find cos(2?).
A. - 
B. 
C. 
D. - 
Answer: D
Mathematics
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Add.233,748,401 + 19,066
A. 233,768,467 B. 233,767,567 C. 233,767,467 D. 233,767,457
Mathematics
Find the real solutions of the equation.
= x + 5
A. {8}
B. {3}
C. {-3}
D. {- 
}
Mathematics
Find the intervals on which the function is increasing and the intervals on which the function is decreasing.f(x) = -3x2 + 12x + 36
A. Increasing on (-?, -2); decreasing on (-2, -?) B. Increasing on (-?, 2); decreasing on (2, -?) C. Increasing on (-2, ?); decreasing on (-?, -2) D. Increasing on (-?, 0); decreasing on (0, -?)
Mathematics
Find the range of the quadratic function.f(x) = 9 - (x + 5)2
A. (-?, 5] B. [9, ?) C. (-?, 9] D. [-5, ?)
Mathematics