SOLUTION: I have a hypotnuse of 20 and I have an adjacent of 12.The opposite is unknown.I know I have to use cos, but I'm still unsure of how to solve for this.

Question 314997: I have a hypotnuse of 20 and I have an adjacent of 12.The opposite is unknown.I know I have to use cos, but I'm still unsure of how to solve for this.
Found 2 solutions by Fombitz, rfer:
Answer by Fombitz(32388) (Show Source): You can put this solution on YOUR website!
What are you solving for?
Answer by rfer(16322) (Show Source): You can put this solution on YOUR website!
c^2-a^2=b^2
400-144=256
sq rt 256=16
RELATED QUESTIONS
I am not in Algebra 2, I am in Algebra 1 and just need the basics.I have a hypotnuse of... (answered by solver91311)
I have a hypotnuse of 7 and the opposite is 3.The adjacent is unknown.I know that you... (answered by scott8148)
I am completely confused regarding trig, the beginner trig in involving right triangles: (answered by vleith,jim_thompson5910,solver91311)
Use an inverse trigonometric function to write theta as a function of x. There is a... (answered by lwsshak3)
I need to find cos of X. the triangle seems to be an obtuse scalene triangle. the... (answered by Alan3354)
An isosceles trapezoid must have two pairs of equal adjacent angles. State and prove the... (answered by orca)
Evaluate exactly as real numbers without the use of a calculator:... (answered by lwsshak3)
Is the inverse of cotangent opposite/adjacent? There is a question that says assuming an... (answered by lwsshak3)
My problem is to do with the hypotenuse of a certain trig problem. The adjacent is 8.25,... (answered by lwsshak3)