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Rohangrr

  • 3 years ago

Trigonometry

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

  2. Rohangrr
    • 3 years ago
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    help??

  3. Rohangrr
    • 3 years ago
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    @kropot72 help

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

  5. kropot72
    • 3 years ago
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    @Rohangrr Are you there?

  6. Rohangrr
    • 3 years ago
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    nope

  7. Rohangrr
    • 3 years ago
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    help me to the ans.

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

  9. Rohangrr
    • 3 years ago
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    17/12

  10. kropot72
    • 3 years ago
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    Correct!

  11. Rohangrr
    • 3 years ago
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    thanks

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