Mark the tick against the correct answer in the following:
To Find: The value of cos (2)
Let , x = cos (2)
x = cos (+ )
Since we know that + =
+ = =
x = cos ()
Now , let y =
tan y =
By pythagorus theroem ,
(Hypotenuse )2 = (opposite side )2 + (adjacent side )2
Therefore, Hypotenuse = 5
cos ()=cos y =