Question

2tan^2xsinx-tan^2=0

Answer 1

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Answer 2

Thanks! Can you help me with this problem? I have a test to study for and started late

Answer 3

That's really creative...how did you do that??? ( the welcome thing)

Answer 4

I'm not very good at trig functions, but I will tag some people that may be able to help. Also, I will send you a link with a tutorial on how to make things like that. @ganeshie8 @Australopithecus

Answer 5

Thank you for your help :)

Answer 6

No problem!

Answer 7

All you have to do for this is use trig identities to show that the left side of your equation equals zero.
http://www.sosmath.com/trig/Trig5/trig5/trig5.html
Here is a list of the identities.

I will give you an example of solving a similar type of question:

sin^2(x) + cos^2(x) - 1= 0

I will use the rule:
sin^2(x) + cos^2(x) = 1
Since this is in the equation: (Note by this rule sin^2(x) = 1 - cos^2(x) remember these rules can be rearranged to suite different cases!)
(sin^2(x) + cos^2(x))-1 = 0
becomes
1 - 1 = 0
0 = 0