Download - 6.4.2 sum and difference formulas
![Page 1: 6.4.2 sum and difference formulas](https://reader036.vdocument.in/reader036/viewer/2022082603/549445fbb47959794d8b4a77/html5/thumbnails/1.jpg)
6.4 SUM AND DIFFERENCE
FORMULASUsing Sum/Difference to Find Exact
Values
(Angles Measured in Radians)
![Page 2: 6.4.2 sum and difference formulas](https://reader036.vdocument.in/reader036/viewer/2022082603/549445fbb47959794d8b4a77/html5/thumbnails/2.jpg)
SUM AND DIFFERENCE FORMULAS FOR COSINE
cos cos cos sin sin
cos cos cos sin sin
![Page 3: 6.4.2 sum and difference formulas](https://reader036.vdocument.in/reader036/viewer/2022082603/549445fbb47959794d8b4a77/html5/thumbnails/3.jpg)
USE SUM FORMULA TO FIND EXACT VALUE
712cos 3 4cos
3 4 3 4cos cos sin sin
32 212 2 2 2
624 4
14 2 6
![Page 4: 6.4.2 sum and difference formulas](https://reader036.vdocument.in/reader036/viewer/2022082603/549445fbb47959794d8b4a77/html5/thumbnails/4.jpg)
USE DIFFERENCE FORMULA TO FIND EXACT VALUE
712cos 3
4 6cos 3 34 6 4 6cos cos sin sin
32 2 12 2 2 2
6 24 4
14 2 6
![Page 5: 6.4.2 sum and difference formulas](https://reader036.vdocument.in/reader036/viewer/2022082603/549445fbb47959794d8b4a77/html5/thumbnails/5.jpg)
SUM AND DIFFERENCE FORMULAS FOR SINE
sin sin cos cos sin
sin sin cos cos sin
![Page 6: 6.4.2 sum and difference formulas](https://reader036.vdocument.in/reader036/viewer/2022082603/549445fbb47959794d8b4a77/html5/thumbnails/6.jpg)
USE SUM FORMULA TO FIND EXACT VALUE
512sin 6 4sin
6 4 6 4sin cos cos sin
32 212 2 2 2
624 4
14 2 6
![Page 7: 6.4.2 sum and difference formulas](https://reader036.vdocument.in/reader036/viewer/2022082603/549445fbb47959794d8b4a77/html5/thumbnails/7.jpg)
USE DIFFERENCE FORMULA TO FIND EXACT VALUE
23 4sin
2 23 4 3 4sin cos cos sin
3 2 212 2 2 2
6 24 4
14 6 2
512sin
![Page 8: 6.4.2 sum and difference formulas](https://reader036.vdocument.in/reader036/viewer/2022082603/549445fbb47959794d8b4a77/html5/thumbnails/8.jpg)
SUM AND DIFFERENCE FORMULAS FOR TANGENT
tan tantan
1 tan tan
tan tantan
1 tan tan
![Page 9: 6.4.2 sum and difference formulas](https://reader036.vdocument.in/reader036/viewer/2022082603/549445fbb47959794d8b4a77/html5/thumbnails/9.jpg)
USE SUM FORMULA TO FIND EXACT VALUE
1312tan 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
![Page 10: 6.4.2 sum and difference formulas](https://reader036.vdocument.in/reader036/viewer/2022082603/549445fbb47959794d8b4a77/html5/thumbnails/10.jpg)
USE DIFFERENCE FORMULA TO FIND EXACT VALUE
1312tan 4
3 4tan
43 4
43 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
![Page 11: 6.4.2 sum and difference formulas](https://reader036.vdocument.in/reader036/viewer/2022082603/549445fbb47959794d8b4a77/html5/thumbnails/11.jpg)
FIND THE EXACT VALUE5 512 12 12 12sin cos cos sin
sin cos cos sin
sin
512 12sin
2sin
1
![Page 12: 6.4.2 sum and difference formulas](https://reader036.vdocument.in/reader036/viewer/2022082603/549445fbb47959794d8b4a77/html5/thumbnails/12.jpg)
FIND THE EXACT VALUE2 29 9 9 9cos cos sin sin
cos cos sin sin
cos
29 9cos
3cos
1
2
![Page 13: 6.4.2 sum and difference formulas](https://reader036.vdocument.in/reader036/viewer/2022082603/549445fbb47959794d8b4a77/html5/thumbnails/13.jpg)
ASSIGNMENT
p. 481# 9 - 12, 17 - 20, 27 - 30