anonymous
  • anonymous
@Nnesha - Can you Help?: What is the exact value of tan 75 degrees? Not just answers please, explain how to do it... PLEASE HELP!!!
Mathematics
  • Stacey Warren - Expert brainly.com
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SOLVED
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jamiebookeater
  • jamiebookeater
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ganeshie8
  • ganeshie8
Hint : \(\large 75 = 30+45\)
ganeshie8
  • ganeshie8
look up \(\tan(A+B)\) formula in ur notes
anonymous
  • anonymous
ok so with the half angle formula right?

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anonymous
  • anonymous
@ganeshie8
anonymous
  • anonymous
I get this: tan 75 = tan (150)/2 = 1 - cos(theta)/sin (theta) = 1-(-sqrt(3)/2)/(1/2) = 2 + sqrt (3)
anonymous
  • anonymous
Looks a little weird but I think its right??
Nnesha
  • Nnesha
i would use this one \[\huge\rm tan(\color{reD}{a}+\color{blue}{b})=\frac{ \tan \color{red}{a}+ \tan \color{blue}{b} }{ 1-tan\color{reD}{a}tan\color{blue}{b} }\] sum formula for tan
Nnesha
  • Nnesha
a ,b are two numbers on the unit circle that add up to 75 degree
Nnesha
  • Nnesha
look above 't first comment by ganeshie8 30+45=75 so a=30 b=45
anonymous
  • anonymous
got it thanks!
Nnesha
  • Nnesha
np

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