tana+tan2a+tan3a=0
Solve the equation

Asked by Anil | 20th Jun, 2017, 07:42: PM

Expert Answer:

begin mathsize 16px style tanA plus tan 2 straight A plus tan 3 straight A equals 0
Use space tan 2 straight A equals fraction numerator 2 tan squared straight A over denominator 1 minus tan squared straight A end fraction space and space tan 3 straight A equals fraction numerator 3 tanA minus tan cubed straight A over denominator 1 minus tan squared straight A end fraction
And space simplify.
You space will space get space tanA equals plus-or-minus square root of 3 comma space plus-or-minus fraction numerator 1 over denominator square root of 2 end fraction
end style

Answered by Sneha shidid | 21st Jun, 2017, 09:41: AM