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How do you simplify bracket 1 plus tan theta bracket bracket 5 sin theta -2 bracket equals 0?
Wiki User
∙ 12y ago
(in a past paper it asks u to solve this for -180</=theta<180, so I have solved it)
Tan theta =-1, so theta = -45.
Use CAST diagram to find other values of theta for -180</=theta<180:
Theta (in terms of tan) = -ve, other value is in either S or C. But because of boundaries value can only be in S.
So other value= 180-45=135.
Do the same for sin.
Sin theta=2/5 so theta=23.6
CAST diagram, other value in S because theta (in terms of sin)=+ve.
So other value=180-23.6=156.4.
Wiki User
∙ 12y ago
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