Question

if sin x=3/4 and cos x < 0 then value of tan x is

Answer 1

Step-by-step explanation:

sinx=3/4

:.sinx>0

cosx<0

:.x lies in second quadrant.

According to pythagoras theorem,

3^2+y^2=4^2

9+y^2=16

y^2=16-9

y^2=7

y=(7)^1/2

tanx=4/(7(^1/2