Adjacent: adjacent (next to) the angle θ
Opposite: opposite the angle θ
Hypotenuse: longest side (and opposite the right angle)

To use this page:

• Determine what is given: for example an angle
  (Theta) and a side (such the adjacent side)
• Find the match (there are only six possiblities)
• Enter the values and press the "Show" button
• Only put in numbers and a decimal point
• The Hypotenuse is ALWAYS the longest side
• All angles (except the right angle itself)
  are less than 90 degrees
• Put in garbage, you'll get out garbage
• Press the "Restart" button to remove the graphic

Given	Value
Hypotenuse
Theta (in degrees)
Use	x = r * cos(θ) y*y = r*r - x*x
Show	Go!
Restart	Clear

Given	Value
Adjacent
Theta (in degrees)
Use	r = x/cos(θ) y*y = r*r - x*x
Show	Go!
Restart	Clear

Given	Value
Opposite
Theta (in degrees)
Use	r = y/sin(θ) x*x = r*r - y*y
Show	Go!
Restart	Clear

Given	Value
Adjacent
Hypotenuse
Use	θ = arccos(x/r) y*y = r*r - x*x
Show	Go!
Restart	Clear

Given	Value
Opposite
Hypotenuse
Use	θ = arcsin(y/r) x*x = r*r - y*y
Show	Go!
Restart	Clear

Given	Value
Opposite
Adjacent
Use	θ = arctan(y/x) r*r = x*x + y*y
Show	Go!
Restart	Clear