How do you find the exact values of the following trigonometric functions?

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1 Answer
Jim G.
Aug 1, 2018

#sintheta=15/17,costheta=8/17,tantheta=15/8#

Explanation:

#"given x and z calculate y using "color(blue)"Pythagoras' identity"#

#y=sqrt(17^2-8^2)=sqrt(289-64)=sqrt225=15#

#"using "x=8,z=17" and "y=15" then"#

#sintheta=y/z=15/17#

#costheta=x/z=8/17#

#tantheta=y/x=15/8#

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