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 =

1