Find the exact function value if it exists.tan -225°
A. 
B. 1
C. -1
D. 
Answer: C
Mathematics
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Find the indicated vector.Let u = 
, v = 
. Find 7u + 9v.
A. 
B. 
C. 
D. 
Mathematics
Given that f(x) = sin x, g(x) = cos x, and h(x) = tan x, evaluate the given function. The point (x, 
), on the circle 
, also lies on the terminal side of an angle ? in standard position. The point 
, on the circle 
, also lies on the terminal side of an angle ? in quadrant IV. g(? + ?)
A. 
B. 
C. 
D. 
Mathematics
Find the radius or diameter as requested.Find the radius.
A. 6079.04 yd B. 22 yd C. 44 yd D. 138.16 yd
Mathematics
Solve the following system by any appropriate method. If there is no real number solution, so state.x2 + y2 = 55
- 
= 1
A. (4, 
), (4, -
), (-4, 
), (-4, -
)
B. (4, 
), (4, -
), (-4, 
), (-4, -
)
C. (4, 
), (4, -
), (-4, 
), (-4 -
)
D. no real solution
Mathematics