solving the equation 3 sec^2 pheta +7= 11 tan pheta  TOPIC_SOLVED

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solving the equation 3 sec^2 pheta +7= 11 tan pheta

Postby mannilea on Wed Sep 09, 2009 2:36 pm

hi wasnt sure whether the two questions should be together or seperate sorry if they were meant to got together

solve the equation 3 sec^2 pheta +7= 11 tan pheta giving all values of x to 3sf in the interval 0<pheta<2pi

sorry for the bad setting out dont no how to get pheta and pi signs

thanks for any help :D
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Postby stapel_eliz on Wed Sep 09, 2009 6:36 pm

Does "pheta" perhaps mean "theta", written as ""...? :oops:

Since the square of the secant can be related to the tangent, a good first step would probably be to replace with , and proceed with solving the resulting quadratic equation in tangent. :wink:
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