Thanks for this, but I don't understand where the four came from.
LaPrinnay 9 months ago
@LaPrinnay
Assuming you're referring to the '4' at 1:23 - using Pythagoreans theorem, you have sqrt(5^2 - 3^2) = 4 because the reference angle R is in the right triangle. Hope this helps. Cheers. - MathDoc
TucsonMathDoc 9 months ago
Thanks for this, but I don't understand where the four came from.
LaPrinnay 9 months ago
@LaPrinnay
Assuming you're referring to the '4' at 1:23 - using Pythagoreans theorem, you have sqrt(5^2 - 3^2) = 4 because the reference angle R is in the right triangle. Hope this helps. Cheers. - MathDoc
TucsonMathDoc 9 months ago