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Question

Find the six trigonometric functions are positive for x=10π3 ?

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Solution

REF.Image.
arc(10π3)=arc(2π+4π3)=arc(4π3)
on the trigonometric unit circle.
sin(4π3)=sin(π+π3)=sinπ3=32
cos(4π3)=cos(π+π3)=cosπ3=12
tan(4π3)=sin(4π3)cos(4π3)=3/21/3=3
cot(4π3)=1tan(4π3)=13
sec(4π3)=1cos(4π3)=112=2
cosec(4π3)=1sin(4π3)=+132=23


1257547_1332405_ans_586999467a3c463d957aa8d8862c794b.PNG

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