What is the answer for question 9) ? http://postimg.org/image/yzcviz60z/

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`rArr 1/tantheta=-24/7`

`rArr tantheta=-7/24`

`rArr theta` =arctan(-7/24)= (180-16.3) degrees and (360-16.3) degrees (Note that tantheta will be negative in the second quadrant and the fourth quadrant)

= 163.7 degrees and 343.7 degrees


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