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

Question

Philoid · Accepted Answer

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 =

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

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