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find the exact value of the indicated trigonometric function of theta
cosθ=4/7,tanθ<0
fin sin theta
 one year ago
 one year ago
find the exact value of the indicated trigonometric function of theta cosθ=4/7,tanθ<0 fin sin theta
 one year ago
 one year ago

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rizwan_uetBest ResponseYou've already chosen the best response.0
dw:1360331199543:dw
 one year ago

mathsmindBest ResponseYou've already chosen the best response.0
you find the lengths of the triangle using pyth. theorem
 one year ago

mathsmindBest ResponseYou've already chosen the best response.0
then use the principle of sin(theta)=opp/hype, and tan(theta)= sin.cos or =opp/dj
 one year ago

mathsmindBest ResponseYou've already chosen the best response.0
tan(theta)=sin(theta)/cos(theta)
 one year ago

rizwan_uetBest ResponseYou've already chosen the best response.0
but here tan theta is not less than 0(zero)
 one year ago

rizwan_uetBest ResponseYou've already chosen the best response.0
recheck your question
 one year ago

mathsmindBest ResponseYou've already chosen the best response.0
yes @rizwan has a point tan(theta) is not less than zero
 one year ago

mathsmindBest ResponseYou've already chosen the best response.0
that condition confused me as well
 one year ago

mathsmindBest ResponseYou've already chosen the best response.0
or its an error by the book or ur teacher
 one year ago

mathsmindBest ResponseYou've already chosen the best response.0
you can use another method to solve this
 one year ago

mathsmindBest ResponseYou've already chosen the best response.0
\[\sin^2(\theta) = 1  \cos^2(\theta)\]
 one year ago
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