How do you use the point ( − 7 , -2 ) on the terminal side of the angle to evaluate the six trigonometric functions?
Jonathan R.
answered 06/10/19
Experienced and Effective Mathematics Tutor
x = -7
y = -2
r = √(x2+y2) = √((-7)2+(-2)2) = √(49+4) = √(53)
sin(Θ) = y/r = -2/√(53)
cos(Θ) = x/r = -7/√(53)
tan(Θ) = y/x = 2/7
csc(Θ) = r/y = -√(53)/2
sec(Θ) = r/x = -√(53)/7
cot(Θ) = x/y = 7/2
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