I just took a math test, but there was a rigged question.
Do not worry everyone, I'm not cheating, I already took the test and asking the question after taking it. It is about trigonometry and I was getting headache attempting the problem.
Stacey Warren - Expert brainly.com
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I knew that I had to substitute the 3x with just a single x, but I just couldn't solve from there.
Here is my approach,
square both sides,\[\large\rm \tan^2(3x)+2\tan(3x)+1=\sec^2(3x)\]Use your Pythagorean Identity on the right side of the equation,\[\large\rm \tan^2(3x)+2\tan(3x)+1=\tan^2(3x)+1\]And then you have a lot of nice cancellations from there :)
Wait, where did you get the 2tan(3x)
And now that you say pythagorean identity, I feel so dumb that I didn't recognize it :(
I'm a failure at math! Nooooooo, my test score is ruined :(