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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 =