Find the square root.- 
A. 13
B. -13
C. -84
D. Not a real number
Answer: B
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Provide an appropriate response.Derive the equations x = x0 + 
(1 - e-kt)cos ?, y = y0 + 
(1 - e-kt)sin ? + 
(1 - kt - e-kt)by solving the following initial value problem for a vector r in the plane. Differential equation: 
= -gj - kv = -gj - k
Initial
conditions: r(0) = x0i + y0j 
(0) = v0 = (v0cos ?)i + (v0sin ?)jThe drag coefficient k is a positive constant representing resistance due to air density, v0 and ? are the projectile's initial speed and launch angle, and g is the acceleration of gravity.
What will be an ideal response?
The point P on the unit circle that corresponds to a real number t is given. Find the indicated trigonometric function.
?Find cot t.
A. 
B. 
C. - 
D. - 
Estimate the derivative of the function 
at the point 
.
?
Please round your answer to the nearest hundredth.
Fill in the blank(s) with the appropriate word(s).
Simplify the expression.
A. -1
B. - 
C. 1
D. 