Provide an appropriate response.Find a cofunction equivalent to sin 37°.
A. tan 53°
B. cot 53°
C. cos 37°
D. cos 53°
Answer: D
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Determine whether the equation in one variable is linear.6
- 11 = 0
A. linear B. not linear
Determine whether the graph is that of a function. If it is, use the graph to find its domain and range, the intercepts, if any, and any symmetry with respect to the x-axis, the y-axis, or the origin.
A. function domain: {x|-1 ? x ? 1} range: all real numbers intercepts: (-1, 0), (1, 0) symmetry: x-axis, y-axis B. function domain: {x|x ? -1 or x ? 1} range: all real numbers intercepts: (-1, 0), (1, 0) symmetry: x-axis, y-axis, origin C. function domain: all real numbers range: {y|y ? -1 or y ? 1} intercepts: (-1, 0), (1, 0) symmetry: y-axis D. not a function
Solve the problem.Two trains leave a train station at the same time. One travels east at 7 miles per hour. The other train travels west at 11 miles per hour. In how many hours will the two trains be 144 miles apart?
A. 16 hr B. 8 hr C. 4 hr D. 8.5 hr
Express the product as a sum containing only sines or cosines.sin(2?) cos(3?)
A. 
[sin(5?) - sin ?]
B. 
[cos(5?) + sin ?]
C. sin cos(6?2)
D. 
[cos(5?) - cos ?]