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Rohangrr
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The value of the trigonometrical expression\[ 3\sin^2 30^o + 2\tan^2 30^o \ is :\ ??\]

Rohangrr
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help??

Rohangrr
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@kropot72 help

kropot72
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\[\sin 30\ degrees=0.5\]
\[\tan 30\ degrees=\frac{1}{3}\sqrt{3}\]
Can you finish it now?

kropot72
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@Rohangrr Are you there?

Rohangrr
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nope

Rohangrr
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help me to the ans.

kropot72
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Just substitute the values:
\[3\sin ^{2}30+2\tan ^{2}30=(3\times 0.5^{2})+(2\times (\frac{1}{3}\sqrt{3})^{2})=\frac{3}{4}+\frac{2}{3}=?\]

Rohangrr
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17/12

kropot72
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Correct!

Rohangrr
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thanks