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April 20, 2014

April 20, 2014

Posted by **Kindell** on Tuesday, February 19, 2008 at 1:00pm.

- Pre Cal -
**Anonymous**, Tuesday, February 19, 2008 at 1:06pmThis is using your trig function.

sine = opposite/hypotenuse

In this problem, we are finding the hypotenuse. Think of the mountain as a right triangle.

sin(25.2) = 1808/x and you are solving for x.

- Pre Cal -
**Kindell**, Tuesday, February 19, 2008 at 1:13pmi tried doing that but my hypotenuse was smaller then my opposite... is that ok...

sin(25.2)= .4257 then i divided by 1808 to get x by itself and i got...

2.3535 E -4

wouldn't that be wrong?

- Pre Cal -
- Pre Cal -
**Anonymous**, Tuesday, February 19, 2008 at 1:29pmNo - you should have done 1808/.4257 and get 4246.33.

- Pre Cal -
**Guido**, Tuesday, February 19, 2008 at 7:29pmWe use sine = opp/hyp

Let x be the height of the slope that we are seeking.

sin(25.2 degrees) = 1808 feet/x

Multiply both sides by x and we get:

sin(25.2 degrees)(x) = 1808 feet

Next: Divide both sides by sin(25.2 degrees) to find x.

x = 1808 feet/sin(25.2 degrees)

x = ????

Can you finish?

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