Question

Solve: Which angle does the line form with the x-axis if its gradient is positive infinity (+∞)

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Answer 1

It makes a right angle

Explanation:

`{ \rm{gradient = \tan( \theta) }} \\ { \rm{ \infin = \tan( \theta) }} \\ { \rm{ \theta = { \tan }^( - 1)( \infin) }} \\ { \rm{ \theta = 90 \degree}}`