Ms. Yang's Math Page

1) SOHCAHTOA
2) Using SOHCAHTOA to calculate sides
3) Using SOHCAHTOA to caluclate angles

Sept 11, 2013 Factoring Radical Review gr 11 Answers
Sept 26, 2013 Class notes finished
Nov 26, 2013 Class notes finished

https://www.youtube.com/watch?v=KTuTTKVZEWM

https://www.youtube.com/watch?v=nJJ8VQl5aZs

https://www.youtube.com/watch?v=I_4oyHeRCto

https://www.youtube.com/watch?v=rhOyLCEttEA

This video uses substitution to solve and then checks by graphing. Pay close attention to the graphing part:

Hi Everyone,

Here are the answers to the midterm review that were not included in the package already.

9) (same as 10) x = (3+-sqrt65)/4
17 sinθ=-3/5, cosθ=-4/5, tanθ=3/4
18) sinθ=-12/13, tanθ=12/5
21) 130°  and 310°
22) b=5.4 cm
24a) ambiguous case: h<a<b   b) a<h
25) BC = 33.1 m
26k) (5sqrt6)/18
27) x≥-3 and x≥5 (latter being more restrictive)
28a) y≥3; y=4 & 3     b) n≥-25/7; n=8       c) m≥-3/2; m=11      d) no restrictions (b/c cubed root); x=-21    e) x≥0 (more restrictive) and x≥-4/5; x=0.

Also note the errors in the Midterm Review Sheet:
Answer #3) minimum
Question #4a) y=x²-24x+150
Question #23) b=24, a=42

Please email me if you find any more errors!

When y is present in the equation:

When y is not present (ie, y=0) in the equation:

More examples:

In the videos, you can move the captions to the side if it’s blocking your view.

I couldn’t find any videos with BEDMAS & Rational Expressions. Just follow the rules of BEDMAS and you should be fine 🙂 Or, refer to my class notes.

Complex Fractions: