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 =

1