How do you evaluate the six trigonometric functions given t=0? Trigonometry Right Triangles Trigonometric Functions of Any Angle 1 Answer MeneerNask Jul 15, 2017 We start with sin0=0,cos0=1 which you should know. Explanation: tan0=(sin0)/(cos0)=0/1=0 cot0=1/(tan0)=1/0=+-oo (undefined) sec0=1/(cos0)=1/1=1 csc0=1/(sin0)=1/0=+-oo (undefined) 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^\circ? How do you find the value of cot 300^@? 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-tan 135? How do you know if sin 30 = sin 150? How do you show that (costheta)(sectheta) = 1 if theta=pi/4? See all questions in Trigonometric Functions of Any Angle Impact of this question 4712 views around the world You can reuse this answer Creative Commons License