Cot theta is 1 over tan theta.The only way for 1/tan theta to be undefined is for tan theta = 0. - answers
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Answer:

Step-by-step explanation:
![6[10] - 5 + 5[10] = 105 \\ \\ 60 - 5 + 50 = 105 \\ \\ 105 = 105](https://tex.z-dn.net/?f=6%5B10%5D%20-%205%20%2B%205%5B10%5D%20%3D%20105%20%5C%5C%20%20%5C%5C%2060%20-%205%20%2B%2050%20%3D%20105%20%5C%5C%20%20%5C%5C%20105%20%3D%20105)
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Answer:
Khan Academy does a great job explaining in their videos titled Graphing Linear Equations. They also offer pracice with explinations and quizez on it.
Step-by-step explanation: