# Trigonometrical identitiesWatch

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#1
Thank you.

sin(@+pi/3) = tan(pi/6) , 0<= @ <=2pi

I got 11pi/6 and 3pi/6, which is 5.7596 and 1.571 respectively.
But the book says it should be : 5.85 and 1.48
Help?
0
14 years ago
#2
(Original post by [email protected])
Thank you.

sin(@+pi/3) = tan(pi/6) , 0<= @ <=2pi

I got 11pi/6 and 3pi/6, which is 5.7596 and 1.571 respectively.
But the book says it should be : 5.85 and 1.48
Help?
tan pi/6=1/sqrt3
arcsin (1/sqrt 3)=0.61547,2.5255,6.8992
.61547-pi/3=-.43171784
pi-(-.3417)=ignore negative answer and do the same with other values you get
1.48 rounded and 5.85
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