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

Printable View

- Mar 18th 2010, 10:22 AMldx2Two trig equations
I ran into problems with these two trig equations, can someone help me ?

- Mar 18th 2010, 11:31 AMicemanfan
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 . - Mar 18th 2010, 11:55 AMldx2
Thank you very much, i understand it now. Do you have any ideas for the second equation ?

- Mar 18th 2010, 12:16 PMicemanfan