SOLUTION: (Trigonometric identities) Find the value of each expression using the given information. 12) sin x and cot x; cos x = 2/5, sin x < 0

Algebra ->  Trigonometry-basics -> SOLUTION: (Trigonometric identities) Find the value of each expression using the given information. 12) sin x and cot x; cos x = 2/5, sin x < 0      Log On


   

Question 930084: (Trigonometric identities)
Find the value of each expression using the given information.
12) sin x and cot x; cos x = 2/5, sin x < 0
Answer by ewatrrr(24785) About Me  (Show Source):
You can put this solution on YOUR website!
cos x = 2/5, sin x < 0
......
sqrt%285%5E2+-+2%5E2%29 = √21
sin x = √21/5
......
cot x = cosx/sinx = 2/√21