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



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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"

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