Mark the tick against the correct answer in the following:
To Find: The value of cos()
Let x =
tan x =
tan x =
=
We know that by pythagorus theorem ,
(Hypotenuse )2 = (opposite side )2 + (adjacent side )2
Therefore, Hypotenuse = 5
cos x =
=
Since here x = hence cos(
) becomes cos x
Hence , cos() = cos x =