Q20 of 118 Page 5

Mark the correct alternative in the following:

If A lies in second quadrant and 3 tan A + 4 = 0, then the value of 2 cot A − 5 cos A + sin A is equal to


Given:


3tanA +4 =0


⇒


tan2x + 1 = sec2x







Because in second quadrant cos is negative.


⇒


sin2x+cos2x= 1






∴ The value of 2 cot A − 5 cos A + sin A =






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