I ran into problems with these two trig equations, can someone help me ?

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- March 18th 2010, 11:22 AMldx2Two trig equations
I ran into problems with these two trig equations, can someone help me ?

- March 18th 2010, 12:31 PMicemanfan
For the first problem:

Substitute yielding

and solve the quadratic for z:

Hence

Using the definition of the arccos and arcsin, the only solution that works is . - March 18th 2010, 12:55 PMldx2
Thank you very much, i understand it now. Do you have any ideas for the second equation ?

- March 18th 2010, 01:16 PMicemanfan