Reciprocal Trig Functions Unit Circle

Which function is the reciprocal function of the cosine?

• sine

• cosecant

• secant

• tangent

Which function is the reciprocal of the sine?

• cosine

• secant

• cotangent

• cosecant

Name the reciprocal trig functions.

• sin, cos, tan

• sin⁻¹, cos⁻¹, tan⁻¹

• csc, cot, sec

• dasher, dancer, prancer

Match each function with its reciprocal.

• cotθ

• tanθ

• secθ

• cosθ

• cscθ

• sinθ

• undefined

Answer explanation

• undefined

Answer explanation

• 1
• 2
• 3
• 4

Using θ as a reference angle, mark the triangle sides as Opp, Adj, and Hyp. Label these on the triangle on your paper.

• Adj

• y

• Hyp

• OP

• Opp

• x

Using θ as a reference angle, mark the triangle sides as Opp, Adj, and Hyp. Label these on the triangle on your paper.

• Opp

• OP

• Hyp

• x

• Adj

• y

The Unit Circle has four quadrants such that:

• All quadrants have 90 degrees

• Quadrant IV is between π and 3π/2 radians

• Quadrant III is between 3π/2 and 2π and radians

• Quadrant I is where the acute angles are