Sine Rule & Cos Rule, Shape & Space Revision Notes From Gcse Maths Tutor
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Shape & Space GCSE Maths Tutor
The Sine & Cosine Rules www.gcsemathstutor.com
topic notes
[email protected]
The Sine Rule
Use either the right, or left hand equation. You are given 3 quantities and required to work out the 4 th.
Manipulating the ratio - Take two ratios, cross multiply and rearrange to put the required quantity as the subject of the equation.
GCSE Maths Tutor
www.gcsemathstutor.com
[email protected]
Shape & Space GCSE Maths Tutor
The Sine & Cosine Rules www.gcsemathstutor.com
topic notes
[email protected]
Example #1
Example #2
GCSE Maths Tutor
www.gcsemathstutor.com
[email protected]
Shape & Space GCSE Maths Tutor
The Sine & Cosine Rules www.gcsemathstutor.com
topic notes
[email protected]
Example #3
The Cosine Rule
There are two problem types: You are given 2 sides + an included angle and required to work out the remaining side You are given all the sides and required to work out the angle.
GCSE Maths Tutor
www.gcsemathstutor.com
[email protected]
Shape & Space GCSE Maths Tutor
The Sine & Cosine Rules www.gcsemathstutor.com
topic notes
[email protected]
Example #1
Example #2
GCSE Maths Tutor
www.gcsemathstutor.com
[email protected]
The Sine & Cosine Rules www.gcsemathstutor.com
topic notes
[email protected]
The Sine Rule
Use either the right, or left hand equation. You are given 3 quantities and required to work out the 4 th.
Manipulating the ratio - Take two ratios, cross multiply and rearrange to put the required quantity as the subject of the equation.
GCSE Maths Tutor
www.gcsemathstutor.com
[email protected]
Shape & Space GCSE Maths Tutor
The Sine & Cosine Rules www.gcsemathstutor.com
topic notes
[email protected]
Example #1
Example #2
GCSE Maths Tutor
www.gcsemathstutor.com
[email protected]
Shape & Space GCSE Maths Tutor
The Sine & Cosine Rules www.gcsemathstutor.com
topic notes
[email protected]
Example #3
The Cosine Rule
There are two problem types: You are given 2 sides + an included angle and required to work out the remaining side You are given all the sides and required to work out the angle.
GCSE Maths Tutor
www.gcsemathstutor.com
[email protected]
Shape & Space GCSE Maths Tutor
The Sine & Cosine Rules www.gcsemathstutor.com
topic notes
[email protected]
Example #1
Example #2
GCSE Maths Tutor
www.gcsemathstutor.com
[email protected]
