How do you evaluate tan(7π/4)? Trigonometry Right Triangles Trigonometric Functions of Any Angle 1 Answer Nghi N. Nov 3, 2015 Evaluate tan(7π4) Ans: -1 Explanation: tan(7π4)=tan(−π4+8π4)=tan(−π4+2π)= =tan(−π4)=−tan(π4)=−1 Answer link Related questions How do you find the trigonometric functions of any angle? What is the reference angle? How do you use the ordered pairs on a unit circle to evaluate a trigonometric function of any angle? What is the reference angle for 140∘? How do you find the value of cot300∘? What is the value of sin−45∘? How do you find the trigonometric functions of values that are greater than 360∘? How do you use the reference angles to find sin210cos330−tan135? How do you know if sin30=sin150? How do you show that (cosθ)(secθ)=1 if θ=π4? See all questions in Trigonometric Functions of Any Angle Impact of this question 12758 views around the world You can reuse this answer Creative Commons License