Use the information given about the angle ?, 0 ? ? ? 2?, to find the exact value of the indicated trigonometric function.cos ? = - 
, 
< ? < ?Find tan(2?).
A. 
B. 
C. 
D. 
Answer: C
Mathematics
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Evaluate the factorial expression.19!
A. 6.4024 × 1015 B. 1.2165 × 1017 C. 2.4330 × 1017 D. 6.0825 × 1016
Mathematics
Write decimal notation.
A. 0.07145 B. 0.7145 C. 71.45 D. 7.145
Mathematics
Find the reciprocal.
A. 
B. 13
C. 
D. 
Mathematics
Solve the problem.Plot the point 
and find other polar coordinates (r, ?) of the point for which:(a) r > 0, -2? ? ? < 0(b) r < 0, 0 ? ? < 2?(c) r > 0 2? ? ? < 4? 
What will be an ideal response?
Mathematics