(i) (ii)
(iii)
Given: sin x = and <x< i.e, x lies in the Quadrant II .
To Find: i)sin ii)cos iii)tan
Now, since sin x =
We know that cos x =
cos x =
cos x =
cos x =
since cos x is negative in II quadrant, hence cos x = -
i) sin
Formula used:
sin =
Now, sin = = =
Since sinx is positive in II quadrant, hence sin
ii)cos
Formula used:
cos =
now, cos = = = = =
since cosx is negative in II quadrant, hence cos =
iii)tan
Formula used:
tan x =
hence, tan = = = = -
Here, tanx is negative in II quadrant.