find tan15degree/2 if tn15=2-3^1/2.thanx in advance
find tan15degree/2 if tn15=2-3^1/2.thanx in advance
chandrika yadav , 7 Years ago
Grade 10
Trigonometry> find tan15degree/2 if tn15=2-3^1/2.thanx ...
2 Answers
Deepak Kumar Shringi
Last Activity: 7 Years ago
Arun
Last Activity: 7 Years ago
Dear student
Tan 2 theta = 2 tan theta/ 1 - tan ²theta
Suppose 2 theta = 15°
Hence
theta = 15/2
Now
Tan theta = x
2 - sqrt(3) = 2x/1 - x²
Now you get a quadratic equation and then you can solve for x. Which is tan 15/2
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