Geometry circles and circumference

In a right isoceles triangle the sides can be 1, 1, sqrt(2). So if two sides are 9 and 9, then what must the hypotenuse be. Just multiply each side by 9
 
rachelmaddie said:
Ohh 90 degrees!
Click to expand...
NO! Yes, there is a 90o angle but what is the other two angles.
Hint: the two angles are equal to one another and the sum of the 3 angles is 180o.
You should know the answer but to be honest we really wanted you to answer my last question. Now we want you to answer both questions!
 
I do want to comment on your notation. You used c to represent the cirumference which is a fine choice. Then you used c to ALSO represent the hypotenuse (that is the diameter) . The pythagorean theorem does NOT have to use the letters a, b and c. You can, for example, use r, s and t such that r^2 + s^2 = t^2.
If the 3 sides of a right triangle are a, b and c with the hypotenuse being b, then a^2 + c^2 = b^2 !!!!!
 
Recall that sqrt(x*y) = sqrt(x)* sqrt(y) if x and y are both positive.
 
I think that we are making complaints about many things.
I think that it would be best if you start over, just doing one problem at a time.
Please do not approximate numbers (put away your calculator!). Each letter is for one meaning. Equal signs must be valid.
So please try just the 1st problem, post your results and we will go from there.
Thanks!
 
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