Verify the identity.cot3 x = cot x (csc2 x - 1)
What will be an ideal response?
cot3 x = cot x cot2 x = cot x (csc2 x - 1)
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Find the unit vector in the same direction as the given vector.v = -2j
A. u = -j
B. u = 4j
C. u = - 
j
D. u = -2j
Determine whether or not the given display is skewed. If it is skewed, state the direction of the skew.The traveling times for 15 workers randomly chosen at an office are displayed in the following dotplot. 
A. The distribution is skewed to the right. B. The distribution is not skewed. C. The distribution is skewed to the left.
Solve the following system by any appropriate method. If there is no real number solution, so state.x2 + 5y2 = 4x2 - 5y2 = 8
A. (
, 
), (
, -
), (-
, 
), (-
, -
)
B. (
, 
), (-
, -
)
C. (
, 
), (
, -
)
D. no solution
Solve.x1/5 = -2
A. -10 B. -32 C. -25 D. No solution