1.Find the center and the radius of the circle with the equation

x2+8x+y2+6y?56=0

Enter the center as an ordered pair (x, y).

The center is ________

The radius is __________

Show work and explain how you got the answer

2.

If tan t=247? and 02??, find sin t,cos t,sec t,csc t,cot t.

Enter the exact answers.

sin t= __________

cos t= __________

sec t= __________

csc t= __________

cot t= __________

3.Determine the amplitude, midline, period, and an equation involving the sine function for the graph shown below.