When you were doing question 8c, you wrote one of the x values as around 0.096, when my calculator said around 0.96, is that correct, and to find the value of x in cos x = 1/ root 3, you take the inverse cos of 1/ root 3 right?
You are absolutely right about both. It should have been 0.9553 and then the second answer is 2pi minus 0.9553 which is correct in the solution. Thanks for your correction.
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I cannot thank you enough for these videos! I also got my unit 7 test and got 100%. You are amazing!
Good for you!!! I love hearing success stories ❤️
thank you so much i have a test tomorrow and you taught me the whole unit in only a few days. You are the best teacher I've ever found! 🙏🏾🙏🏾
Happy you found me! ❤️
Loved this video, helped me a lot, thank you 💕💕
1:21 - doesn’t sin of 1/2 have a solution of pie - pie/6? from the 2nd quadrant
You need to check the domain. In this case it is between -pi and 0
@@mshavrot_mathin the 2nd quadrant, wouldn’t you still be able to solve it by changing pie into the negative pie?
Definitely not. Look at the sketch that I drew to illustrate that there is no solution
When you were doing question 8c, you wrote one of the x values as around 0.096, when my calculator said around 0.96, is that correct, and to find the value of x in cos x = 1/ root 3, you take the inverse cos of 1/ root 3 right?
You are absolutely right about both.
It should have been 0.9553 and then the second answer is 2pi minus 0.9553 which is correct in the solution. Thanks for your correction.
I hate math
Hate is a strong word! Maybe immensely dislike??