anonymous
  • anonymous
Trigonometry
Mathematics
katieb
  • katieb
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anonymous
  • anonymous
The value of the trigonometrical expression\[ 3\sin^2 30^o + 2\tan^2 30^o \ is :\ ??\]
anonymous
  • anonymous
help??
anonymous
  • anonymous

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kropot72
  • kropot72
\[\sin 30\ degrees=0.5\] \[\tan 30\ degrees=\frac{1}{3}\sqrt{3}\] Can you finish it now?
kropot72
  • kropot72
@Rohangrr Are you there?
anonymous
  • anonymous
nope
anonymous
  • anonymous
help me to the ans.
kropot72
  • kropot72
Just substitute the values: \[3\sin ^{2}30+2\tan ^{2}30=(3\times 0.5^{2})+(2\times (\frac{1}{3}\sqrt{3})^{2})=\frac{3}{4}+\frac{2}{3}=?\]
anonymous
  • anonymous
17/12
kropot72
  • kropot72
Correct!
anonymous
  • anonymous
thanks

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