Weds Apr 25th Understanding how and when to use the sine rule to solve problems

LEARNING OBJECTIVE: To understand and use the Sine Rule to solve triangle problems

SUCCESS CRITERIA: You will be able to remember and write down the SINE RULE and use it to solve problems

STARTER: Use your calculator to write down to 3DP these values,

1. Sine 30°
   
2. Sin 60°
   
3. Sin 45°
   
4. Sin 0°
   
5. Sin 90°
   
6. Sin 1°
   
7. Sin 99°
   
8. Sin 45.6°
   

   Find the value of these to 1 dp
   

9. Sin-1(.4226)
   
10. Sin-1(1)
    
11. Sin-1(0)
    
12. Sin-1(.5)
    
13. Sin-1(0.8746)
    
14. Sin-1(0.23344)
    
15. Sin-1(0.99027)
    
16. What angle has a sin value of 0.996194
    
17. What angle has a sin value of 0.22495
    

LESSON: Short discussion on TRIGONOMETRY and what students can remember about it.

Work through this Lesson on The Sine Rule (Don't do Screens 8 & 9)

Have a go at Questions 1 & 2 on page 484

Ambiguous case (screens 8 & 9) then rest of exercise 22G

PLENARY: Checking Answers, have a look at an Exam Pro question if time.