Posted by **Lena** on Thursday, November 13, 2008 at 9:54pm.

Did I do this right?

The shorter leg of a 30°- 60°- 90° right triangle is 7.5 inches. How long is the longer leg and the hypotenuse?

1) The longer side:

7.5/Sin 60 =b/Sin 30

4.208723391 inches

Hypotneuse:

8.6 inches

- Math -
**bobpursley**, Thursday, November 13, 2008 at 10:00pm
ARRRRRGGGGGG.

The shorter leg is opposite the smallest angle.

7.5/sin30=longerleg/sin60

Then redo the hypotenuse.

- Math -
**Lena**, Thursday, November 13, 2008 at 10:49pm
Oops :O

Thanks

- Math -
**Trig**, Thursday, November 13, 2008 at 10:02pm
THE SIDES ON A 30-60-90 TRIANGLE:

Short Side = x

Long Side = sqrt(3)*x

Hypotenuse = 2x

In this case:

Short Side = 7.5

Long Side = sqrt(3)*7.5

Hypotenuse = 2*7.5

- Math -
**Lena**, Thursday, November 13, 2008 at 10:50pm
Thanks :)

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