How do you find the exact values of cot, csc and sec for 0 degrees? Trigonometry Right Triangles Trigonometric Functions of Any Angle 1 Answer Rafael Oct 17, 2015 #cot0#: undefined #csc0#: undefined #sec0=1# Explanation: #0# is a special angle. #cot#, #csc#, and #sec# are actually just the reciprocals of #tan#, #sin#, and #cos# respectively. Solving cot #0#: #cot0=1/tan0=1/0" this is undefined"# Solving csc #0#: #csc0=1/sin0=1/0" this is undefined"# Solving sec #0#: #sec0=1/cos0=1/1=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^\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 8772 views around the world You can reuse this answer Creative Commons License