How do you find the 6 trigonometric functions for -45 degrees? Trigonometry Right Triangles Trigonometric Functions of Any Angle 1 Answer sankarankalyanam Mar 17, 2018 As below Explanation: #hat (-45)# is in IV quadrant where only #cos, sec# are positive. #sin (-45) = - sin 45 = - (1/sqrt2)# #csc (-45) = - csc 45 = - 1/ sin 45 = - sqrt2)# #cos (-45) = cos 45 = - (1/sqrt2)# #sec (-45) = sec 45 = 1/cos 45 = sqrt2)# #tan (-45) = - tan 45 = - 1# #cot (-45) = - cot 45 = -1/ tan 45 = - 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 15716 views around the world You can reuse this answer Creative Commons License