Find T, N, and B for the Given Space Curve $$\mathbf { r } ( t ) = ( 8 + t ) \mathbf { i } + ( 9 + \ln ( \sec t ) ) \mathbf { j } - 10 \mathbf { k } , - \pi / 2 < t < \pi / 2$$

question 11

Multiple Choice

Find T, N, and B for the given space curve.
- $$\mathbf { r } ( t ) = ( 8 + t ) \mathbf { i } + ( 9 + \ln ( \sec t ) ) \mathbf { j } - 10 \mathbf { k } , - \pi / 2 < t < \pi / 2$$

• A) T = (-cos t)i - (sin t)j; N = (sin t)i - (cos t)j ; B = -k
• B) T = (cos t)i + (sin t)j; N = (- sin t)i + (cos t)j ; B = k
• C) T = (cos t)i - (sin t)j; N = (-sin t)i - (cos t)j ; B = -k
• D) T = (-cos t)i - (sin t)j; N = (-cos t)i + (sin t)j ; B = k

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