SOLUTION: Hi. How do I find the exact numerical value of the expression sin120degrees cos150degrees - tan^2 135degrees? thanks.

Algebra ->  Trigonometry-basics -> SOLUTION: Hi. How do I find the exact numerical value of the expression sin120degrees cos150degrees - tan^2 135degrees? thanks.      Log On


   

Question 601004: Hi. How do I find the exact numerical value of the expression
sin120degrees cos150degrees - tan^2 135degrees?
thanks.
Answer by Alan3354(69443) About Me  (Show Source):
You can put this solution on YOUR website!
How do I find the exact numerical value of the expression
sin120degrees cos150degrees - tan^2 135degrees?
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sin(120) = sqrt(3)/2
cos(150) = -sqrt(3)/2
tan(135) = -1