June 13

Week 17 – Sine and Cosine Law

this week in math we learned about the sine law and cosine law, they’re used when you can’t solve a triangle with simple SOH CAH TOA ratios.

For the top side we have a pretty simple triangle and I show you the steps above and the reason I flipped the equation upside down is because of a trick I was taught, whatever you’re trying to solve whether it be a side or an angle have that on top, so if you’re trying to figure out a side keep the sides on top and if it’s an angle keep the angles on top, work smarter not harder.

and on the bottom another simple triangle and I have demonstrated how the cosine law works there

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Posted June 13, 2018 by raduh2015 in category Grade 11, Math 11

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