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Simplify the expression.

0 votes

Simplify the expression.

sin (tan-1 x)

asked Jan 27, 2015 in CALCULUS by anonymous
reshown Jan 27, 2015 by goushi

1 Answer

0 votes

Step 1:

The trigonometric expression is image.

Consider image, then image

Definition of inverse trigonometric function : image.

If image, then image.

image.

Step 2:

From Pythagorean theorem,

The square of the hypotenuse is equal to sum the squares of the other two sides.

image

image.

Substitute image in image.

image.

Solution :

image.

answered Jan 27, 2015 by joseph Apprentice

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