Find all numbers u (if any) so that the given point (u, y) or (x, u) is on the unit circle.
A. ± 
B. ± 
C. ± 
D. ± 
Answer: B
Mathematics
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Use < or > for ? to write true sentence.
? 
A. < B. >
Mathematics
In right triangle ?CAT,?C is the right angle.Then
(a) (TA)(sin A) = CT. (b) (TA)(cos T) = CT. (c) (TA)(sin T) = CA. (d) (a), (b) and (c) are correct. (e) (a), (b) or (c) is correct
Mathematics
Solve the problem.An airplane flies 470 miles with the wind and 310 against the wind in the same length of time. If the speed of the wind is 20, what is the speed of the airplane in still air?
A. 102.5 mph B. 38.75 mph C. 97.5 mph D. 87.5 mph
Mathematics
Evaluate (if possible) the sine, cosine, and tangent of the real number.
?
?
A. 
corresponds to the point 
.
B.
corresponds to the point 
.
C.
corresponds to the point 
.
D.
corresponds to the point 
.
E. Not possible
Mathematics