Math 10-3

Unit 7 Trigonometry of Right Triangles

Lesson 7.2 The Sine Ratio

Formula page

I expect that you will be able to use a formula page for this class,  but that will be determined by your teacher.

Your teacher may have a formula page they expect you to use.

Below is a link to the formula page I will use (at least for now!) when I’m doing questions for this class.

This may change, depending on feedback from your teacher.

I encourage you to download this page and print it so you have it handy when you are doing math.

LINK
https://drive.google.com/open?id=1EMauePx-P6WrtTIcd7-AtNnmJt8zqXpI

Explore the Math  Pages 283 - 284

Read/Work through this section of your textbook.
These ideas will be developed in the examples

Your teacher will let you know which pages you need to do for this lesson.

I cover this in the first example, but HERE is a short video on two important ideas
angle of elevation
angle of depression

Example 1  Page 288

Read the example problem and try to answer the question YOURSELF if you can.
Use the textbook solution or the Video Tutorial if you need help.

Video Tutorial

Example 2  Pages 288 - 289

Read the example problem and try to answer the question YOURSELF if you can.
Use the textbook solution or the Video Tutorial if you need help.

Video Tutorial

Build Your Skills Pages 289 - 291

These questions all come from your textbook.

Doing Practice Problems

The problems in this section reinforce the math presented in this lesson, and give you opportunities to build on and practice your skills.

•	Work through the practice problems for this lesson.
	These problems are for practice, you don’t need to hand them in!
	(your teacher may assign specific questions for you to complete)

•	Use the answers in the back of the book to CHECK YOUR WORK!

•	If you make a mistake, TRY TO FIX IT!

•	If you need help or want more information, view the video solutions provided.

•	If you still need more help,  CONTACT YOUR TEACHER!

•	EXTEND YOUR THINKING problems will be more challenging than the others.

Notes

Question 9,    I did a bit of an explanation here, but to really do the question would require a scale diagram, doing measurements, etc.
A GREAT question, but since I don’t even know if anyone will actually do this, in the interests of time,  I just did this quickly.
Certainly could do a much better presentation if it’s needed.

Question 10,    I didn’t do a video here.
Just using your calculator,  sin 0 ° = 0,   and sin 90° = 1
So,  for angles between 0 ° and 90°,  the sine values go from 0 to 1

Video Solution Links

Check your work for every problem you do!
If you make a mistake,  try to fix it!
Use the video solutions for more information.
If a problem still doesn’t make sense, ASK YOUR TEACHER FOR HELP!

({{"Question 1", "Question 2", "Question 3", "Question 4", "Question 5"}, {"Question 6", "Question 7", "Question 8", "Question 9",   }})