# What is the right choice for question 39) ? http://postimg.org/image/4wbelxjmz/

### 1 Answer | Add Yours

The 3 basic trigonometric functions are: sine, cosine, and tangent.

The reciprocal of sine is: `1/sin x = csc x`

csc = cosecant

The reciprocal of cosine is: `1/cosx = sec x`

sec = secant

The reciprocal of tangent is: `1/tanx = cot x`

cot = cotangent

**Therfore the 3 reciprocals are: secant, cosecant, and cotangent = choice"d"**

` `