Question:
Trigonometric Functions
Which one of the following trigonometric functions of x is not correct?
Which one of the following trigonometric functions of x is not correct given that sin x > 0 and sec x = -2?
? csc x = ( 2 sq rt 3) / 3
? cos x = - 1 / 2
? cot x = - ( sq rt 3 ) / 3
? tan x = - ( sq rt 3 ) / 2