Question

Write an algebraic expression that is equivalent to the expression. (Hint: Sketch a right triangle.)

cot(arctan x)

Answer 1

Step 1 :

The trigonometric expression is .

Let , then .

Since is positive, is a first-quadrant angle.

Step 2 :

Draw a right triangle with positive angle .

.

An algebraic expression of is .

Solution :

An algebraic expression of is .