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iogann1982 [59]
2 years ago
15

Find tan(30) (its a right triangle)

Mathematics
1 answer:
Travka [436]2 years ago
8 0
Use the 30-60-90 triangle.

Tan is opposite over adjacent.

\frac{1}{ \sqrt{3} }
Square roots cannot be on the bottom.

\frac{1}{ \sqrt{3} }  \times  \frac{ \sqrt{3} }{ \sqrt{3} }
The bottom cancel out the square root bar.

Your answer is:

\frac{ \sqrt{3} }{3}
(It's best to memorize the 30-60-90 and the 45-45-90 triangles during trigonometry. It helps a lot.)

Hope this helps!

:)

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Answer:

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algol13

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The answer would be:

E. P(A ∩ B) = P(A) x P(B)

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help plz( If the shell of a bass drum was cut down one side and laid flat, which expression would give the area, A, of the shell
cluponka [151]

Answer:

Last option: A=2\pi rh

Step-by-step explanation:

 If  the shell of a bass drum was cut down one side and laid flat, the resulting shape would be a rectangle.

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A=l*w

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In this case, the lenght of the rectangle obtained (the lenght of the shell)  is the circumference of the drum.

Remember that the circumference of the circle can be calculated with:

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Then:

l=2\pi r

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w=h

Then, substituting into A=l*w, you get:

A=2\pi rh

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