For the Curve R(t), Find an Equation for the Indicated

question 91

Multiple Choice

For the curve r(t) , find an equation for the indicated plane at the given value of t.
- $\mathbf { r } ( \mathrm { t } ) = ( 10 \mathrm { t } \sin t + 10 \cos \mathrm { t } ) \mathbf { i } + ( 10 \mathrm { t } \cos t - 10 \sin t ) \mathbf { j } + 2 \mathbf { k } ; \text { normal plane at } t = 5.5 \pi$

• A) x - y + z = -10
• B) y = -10
• C) x + y + z = -10
• D) y = 10

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