SlideShare a Scribd company logo
Using Sum/Difference to Find Exact
Values
(Angles Measured in Radians)
 cos cos cos sin sin       
 cos cos cos sin sin       
7
12cos 
 3 4cos  
 
3 4 3 4cos cos sin sin   

1 2 3 2
2 2 2 2
     
              
2 6
4 4

 1
4 2 6
7
12cos 
 3
4 6cos  
 
3 3
4 6 4 6cos cos sin sin   

2 3 2 1
2 2 2 2
     
               
6 2
4 4
 
 1
4 2 6
 sin sin cos cos sin       
 sin sin cos cos sin       
5
12sin 
 6 4sin  
 
6 4 6 4sin cos cos sin   

1 2 3 2
2 2 2 2
     
              
2 6
4 4

 1
4 2 6
sin75  2
3 4sin  
 
2 2
3 4 3 4sin cos cos sin   

3 2 1 2
2 2 2 2
     
               
6 2
4 4

 1
4 6 2
 
tan tan
tan
1 tan tan
 
 
 

 

 
tan tan
tan
1 tan tan
 
 
 

 

13
12tan 
 3
4 3tan  
 
4 3
4 3
tan tan
1 tan tan
 
 

   
1 3
1 1 3
 

 
1 3
1 3



1 3
1 3
 

4 2 3
1 3
 


4 2 3
2
 

2 3 
13
12tan 
 4
3 4tan  
 
4
3 4
4
3 4
tan tan
1 tan tan
 
 

   
3 1
1 3 1



3 1
1 3


1 3
1 3



4 2 3
1 3
 


4 2 3
2
 

2 3 
5 5
12 12 12 12sin cos cos sin   

sin cos cos sin   
 sin  
 5
12 12sin  

2sin 
1
2 2
9 9 9 9cos cos sin sin   

cos cos sin sin   
 cos  
 2
9 9cos  

 3cos 
1
2
p. 481 # 9 - 12, 17 - 20,
27 - 30

More Related Content

PPTX
6.4.2 sum and difference formulas
PPTX
6.4.3 sum and difference formulas
PPTX
10 2 sum and diff formulas for tangent
PPTX
6.4.2 sum and difference formulas
PDF
11 x1 t08 02 sum & difference of angles (2013)
DOC
3 3倍角公式
DOC
3 4和積互化
PPTX
6.3.1 trig identities
6.4.2 sum and difference formulas
6.4.3 sum and difference formulas
10 2 sum and diff formulas for tangent
6.4.2 sum and difference formulas
11 x1 t08 02 sum & difference of angles (2013)
3 3倍角公式
3 4和積互化
6.3.1 trig identities

More from Northside ISD (20)

PPTX
6.4.1 sum and difference formulas
PPTX
6.4.3 sum and difference formulas
PPTX
6.5.1 double angle formulas
PPTX
6.4.1 sum and difference formulas
PPTX
6.5.2 half angle formulas
PPTX
4.9.1 quad inequal graph 2 var
PPTX
4.9.3 quad inequal algebraically
PPTX
4.9.3 quad inequal algebraically
PPTX
4.9.2 quad inequal tables and line graphs
PPTX
6.4.3 sum and difference formulas
PPTX
6.4.1 sum and difference formulas
PPTX
6.5.1 double angle formulas
PPTX
4.10.2 write models with calc reg
PPTX
4.10 write quadratic models
PPTX
4.8.2 quadratic formula
PPTX
6.3.2 trig identities, establish identities
PPTX
4.7 complete the square
PPTX
4.6 sqr rts with complex numbers
PPTX
4.5 solve by finding square roots
PPTX
4.7 write in vertex form
6.4.1 sum and difference formulas
6.4.3 sum and difference formulas
6.5.1 double angle formulas
6.4.1 sum and difference formulas
6.5.2 half angle formulas
4.9.1 quad inequal graph 2 var
4.9.3 quad inequal algebraically
4.9.3 quad inequal algebraically
4.9.2 quad inequal tables and line graphs
6.4.3 sum and difference formulas
6.4.1 sum and difference formulas
6.5.1 double angle formulas
4.10.2 write models with calc reg
4.10 write quadratic models
4.8.2 quadratic formula
6.3.2 trig identities, establish identities
4.7 complete the square
4.6 sqr rts with complex numbers
4.5 solve by finding square roots
4.7 write in vertex form
Ad

6.4.2 sum and difference formulas

  • 1. Using Sum/Difference to Find Exact Values (Angles Measured in Radians)
  • 2.  cos cos cos sin sin         cos cos cos sin sin       
  • 3. 7 12cos   3 4cos     3 4 3 4cos cos sin sin     1 2 3 2 2 2 2 2                      2 6 4 4   1 4 2 6
  • 4. 7 12cos   3 4 6cos     3 3 4 6 4 6cos cos sin sin     2 3 2 1 2 2 2 2                       6 2 4 4    1 4 2 6
  • 5.  sin sin cos cos sin         sin sin cos cos sin       
  • 6. 5 12sin   6 4sin     6 4 6 4sin cos cos sin     1 2 3 2 2 2 2 2                      2 6 4 4   1 4 2 6
  • 7. sin75  2 3 4sin     2 2 3 4 3 4sin cos cos sin     3 2 1 2 2 2 2 2                       6 2 4 4   1 4 6 2
  • 8.   tan tan tan 1 tan tan             tan tan tan 1 tan tan          
  • 9. 13 12tan   3 4 3tan     4 3 4 3 tan tan 1 tan tan          1 3 1 1 3      1 3 1 3    1 3 1 3    4 2 3 1 3     4 2 3 2    2 3 
  • 10. 13 12tan   4 3 4tan     4 3 4 4 3 4 tan tan 1 tan tan          3 1 1 3 1    3 1 1 3   1 3 1 3    4 2 3 1 3     4 2 3 2    2 3 
  • 11. 5 5 12 12 12 12sin cos cos sin     sin cos cos sin     sin    5 12 12sin    2sin  1
  • 12. 2 2 9 9 9 9cos cos sin sin     cos cos sin sin     cos    2 9 9cos     3cos  1 2
  • 13. p. 481 # 9 - 12, 17 - 20, 27 - 30