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Mathematics 10 Online
OpenStudy (anonymous):

how to do this trigonometry question? image here: http://minus.com/lOQCskUBuk0Vw

OpenStudy (anonymous):

NUMBER 11

OpenStudy (anonymous):

Here is the image

OpenStudy (anonymous):

Have you been taught about special triangles yet?

OpenStudy (anonymous):

The 45-45-90 and 30-60-90 triangles?

OpenStudy (anonymous):

well can u elaborate

OpenStudy (anonymous):

Sure. You can split that triangle down in the middle. On the right side you have a triangle with 30 degrees. So the triangle on the right is a right triangle, specifically a 30-60-90 triangle. I've attached pictures that help you find the values.

OpenStudy (anonymous):

so i just divide 65/2?

OpenStudy (anonymous):

but then again that is not accurate

OpenStudy (anonymous):

You know that the base of the triangle is 65m. So divide 65 by 2 and you get 32.5m. That's your base. Now find the other values using special triangles.

OpenStudy (anonymous):

yes, i did that and i didnt get an accurate answer

OpenStudy (anonymous):

Pretend that the height of the tree is x. The base is \[xsqrt{3}\]. You know that \[xsqrt{3}\] = 32.5 Solve for x.

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