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Quandaries & Queries
Q & Q
2 items are filed under this topic.
Solving a trig equation
Please Help! My question is :
Find all of the solutions to sin(x/2)+cosx-1=0
Answered by Penny Nom.
A problem with arccos.
From Vanessa Chan:
Prove: arc cos4/5 + arc cos (-5/13) = arc cos (-56/65)
Answered by Harley Weston.
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