Categories Trig Identities Trigonometric Functions A Sneaky Simplifying Mistake Post author By mpershan Post date February 15, 2013 4 Comments on A Sneaky Simplifying Mistake This is a fun mistake, via Jonathan Newman. Find it, and then explain how you’d help the kid who made it. Share this:EmailPrint ← Order of Operations → QED? 4 replies on “A Sneaky Simplifying Mistake” , it should be . I think this is just a simple algebra mistake, or just going too quickly and not thinking through the subtraction properly. Oh, looks like Latex in comments isn’t enabled. Oh Isn’t Michael nice to fix our Latex? Let me give it a go ( my Sunday efforts!) which is or you can use the trig identity if you remember it. Okay, Michael, punting to you. Again. It worked for cos 2t. the parentheses are wrong. which is or you can use the trig identity if you remember it. Comments are closed.

, it should be . I think this is just a simple algebra mistake, or just going too quickly and not thinking through the subtraction properly.

Oh Isn’t Michael nice to fix our Latex? Let me give it a go ( my Sunday efforts!) which is or you can use the trig identity if you remember it.

Okay, Michael, punting to you. Again. It worked for cos 2t. the parentheses are wrong. which is or you can use the trig identity if you remember it.

## 4 replies on “A Sneaky Simplifying Mistake”

, it should be . I think this is just a simple algebra mistake, or just going too quickly and not thinking through the subtraction properly.

Oh, looks like Latex in comments isn’t enabled.

Oh Isn’t Michael nice to fix our Latex? Let me give it a go ( my Sunday efforts!)

which is or you can use the trig identity if you remember it.

Okay, Michael, punting to you. Again. It worked for cos 2t. the parentheses are wrong.

which is or you can use the trig identity if you remember it.