Hi there, it would be much appreciated if any one can help me solve this equation 2tan^2x+2sec^2x-secx =12 thanks
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Replace , then note and solve the quadratic. Can you do that?
Originally Posted by red_dog Replace , then note and solve the quadratic. Can you do that? sorry but i dont know wat u mean when u say ''note cos x =t
Originally Posted by masiboy sorry but i dont know wat u mean when u say ''note cos x =t red_dog means make the substitution and solve the resulting quadratic equation for t. Then, once you have found the value(s) of t, substitute back into and solve for x.
Hello, masiboy! I'll assume that the answers are on Since , the equation becomes: . . . which simplifies to: . . . and factors: . We have: . . . and: .
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