A right triangle has a 90 degree angle, and an angle x. What will the measure of the third angle be?

I know thus far.

90 + x + y = 180

yet, i must figure out what y is. I am stuck.

I very much appreciate any potential help.

Just solve for y in the equation you came up with and that's it. It may look weird, but its ok!

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90xy=180
I divide and I get 90. I can't multiply. I am truly stuck. I do not see a solution to this problem. Has been quite stagnant.

Where did this multiplication business come from?

Check it out.

Let's call the third angle y then



Let's do some algebra and subtract 90 from both sides.





So, what that statement says is that, when we take the 90 degree angle out of the equation, the two remaining angles will add up to be 90 degrees. It follows then that if we subtract both sides by one of the variables, will will have an expression for find the angle in question. So, let's subtract x from both sides to get the angle y





And there we have it. the third angle (y) is 90-x.

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Thank you very much Von Nemo. I knew it had to be 90 just the algebra is better method.

Hey that's just what I do.

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