MCQ
The value of $\left(\sin 70^{\circ}\right)\left(\cot 10^{\circ} \cot 70^{\circ}-1\right)$ is
- ✓1
- B0
- C$3 / 2$
- D$2 / 3$
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${l_1} = \left( {3 + t} \right)\hat i + \left( { - 1 + 2t} \right)\hat j + \left( {4 + 2t} \right)\hat k,\, - \infty < t < \infty $
${l_2} = \left( {3 + 2s} \right)\hat i + \left( {3 + 2s} \right)\hat j + \left( {2 + s} \right)\hat k,\, - \infty < s < \infty $
Statement $1$ : Line $l$ and $l_2$ are coplaner lines
Statement $2$ : Line $l$ and $l_2$ are intersecting lines