Can somebody explain to me how to solve this please? tan2x=(cos2x)/2
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Originally Posted by unmcintosh Can somebody explain to me how to solve this please? tan2x=(cos2x)/2 cross multipliing we get Now let giving us solving by quadratic equation we get can you go from there?
yes i can, thank you!
Originally Posted by unmcintosh yes i can, thank you! Note, that once you get the answer for the quadratic, you must do the following Let the solution of the qudratic be since you want the answer for x, you go back to yoru sub
Originally Posted by Mathstud28 cross multipliing we get Now let giving us solving by quadratic equation we get can you go from there? Inside the square root, it should be . The way you did it would give one solution, when in fact there are two solutions.
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