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I need help with VERY easy geometry...it's more like trig. But please can someone help me?
I need to find x in the triangle. Can someone also explain how to do it. No need in detail but just a little explanation. Thanks :]
IT CANNOT BE OVER 500. It's not 500 whatever... It's between 80 and 150. I just don't know that answer.
8 Answers
- Anonymous1 decade agoFavorite Answer
Use the Law of Sines
x/sin 25 = 250/sin 65
Solving for "x"
x = 250(sin 25/sin 65)
I am sure you can carry out the required calculation from here.
Hope this helps.
- SteveLv 51 decade ago
You know that you have a 25 degree angle with opposite side of X and an adjacent (touches the angle) side that is 250 units long so
Tangent is opposite divided by adjacent
Tan 25= X / 250
250 * Tan 25 = X
Alternately
Tan 65 = 250 / X
X = 250 / (tan 65)
X= 116.577
- Anonymous1 decade ago
You could use the Law of Sines:
sin(25)/x = sin(65)/250
Or just use the definition of tangent (opposite / adjacent):
tan(25) = x / 250
tan(65) = 250/x
Or use the definition of cotangent
cot(25) = 250/x
cot(65) = x/250
Just take any one of these 5 equations and solve it. You'll get the same answer.
- 1 decade ago
Ok
remember sine cosine and tangent?
Just remember SOH CAH TOA
This mean sine=opposite/hypotenuse Cosine= adjacent/hypotenuse
and tangent= opposite/adjacent
Now, you know your angle is 25% thats opposite from the missing side
The one that will work is Tangent
tan(25)=X/250 (opposite/adjacent)
So, take the angle and go
tan(25) on your calculator
so 0.466=X/250
multiply by 250
116.58= X
There yah go!
hope I helped!
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- 1 decade ago
use law of sines
sin of angle divided by the opposite side.
sin(65)/250 = sin(25)/x
now solve for x
- Anonymous1 decade ago
250*tan(25)=x
- EdesignerLv 61 decade ago
Howdy...
try this site....its pretty good..
http://argyll.epsb.ca/jreed/math9/strand3/3105.htm
from the E