Addition Formulae Lesson Slides: 9 Slides

9 Slides • 4 Questions

1

Addition & Double Angle Formulae

by SITI ADIBAH ISMAIL

2

Watch the video

3

Watch the video

4

Derive for Tan (+)

5

Derive for Tan (-)

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Addition Formulae

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Example 1

Simplify

8

Example 2

Simplify

9

Example 3

Simplify

10

Multiple Choice

Simplify $\cos65\degree\cos45\degree-\sin65\degree\sin45\degree$

1

$\cos\ 110\degree$

2

$\sin110\degree$

3

$\cos20\degree$

4

$\sin20\degree$

11

Multiple Choice

Simplify $\sin72\degree\cos60\degree-\cos72\degree\sin60\degree$

1

$\cos\ 12\degree$

2

$\sin12\degree$

3

$\cos\ 132\degree$

4

$\sin132\degree$

12

Multiple Choice

Simplify $\frac{\tan29\degree+\tan74\degree}{1-\tan29\degree\tan74\degree}$

1

$\tan103\degree$

2

$\tan\ 65\degree$

13

Fill in the Blanks

Find the value for $\sin63\degree\cos27\degree+\cos63\degree\sin27\degree$

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Addition & Double Angle Formulae

by SITI ADIBAH ISMAIL

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