mtan(a-30)=ntan(a+120), prove that 2cos2a= (m+n)/(m-n)
Sudipta Roy , 8 Years ago
Grade
Trigonometry> mtan(a-30)=ntan(a+120), prove that 2cos2a...
1 AnswersDeepak Kumar Shringi
Approved Last Activity: 8 Years ago
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