Use the parametric equations x = a cos t , y = b sin t to show that the circumference C of an ellipse with semimajor axis a and eccentricity e is C = 4 a ∫ 0 π / 2 1 − e 2 sin 2 u d u
Use the parametric equations x = a cos t , y = b sin t to show that the circumference C of an ellipse with semimajor axis a and eccentricity e is C = 4 a ∫ 0 π / 2 1 − e 2 sin 2 u d u
Use the parametric equations
x
=
a
cos
t
,
y
=
b
sin
t
to show that the circumference C of an ellipse with semimajor axis a and eccentricity e is
C
=
4
a
∫
0
π
/
2
1
−
e
2
sin
2
u
d
u
Eliminate the parameter t from the parametric equations x = 3 + sin t and y = cos t − 2. Graph the resulting Cartesian equation on a rectangular coordinate system.
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Find the parametric equations for the ellipse y2 + 4x2 - 2y + 4x + 1 = 0. Hint: Use completing the square and sin(t) and cos (t).
A golf ball is hit with an initial velocity of 135 feet per second (about 92 miles per hour) at an angle of 60
degrees to the horizontal. There is a 5 foot-per-second headwind that reduced the horizontal velocity by that
amount. The vertical component of velocity is unaffected.
Find parametric equations for the position of the ball relative to the tee as a function of time after it is hit.
I=
135 cos
60π
180
5
=(1
y=-16t² + 135 sin
60π
180
After how many seconds does the ball hit the ground?
t
seconds
How far does the ball travel before hitting the ground?
feet
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