Sine Rule, Cosine Rule,trigonometry Revision Notes From A-level Maths Tutor
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Trigonometry A-level Maths Tutor
Pure Maths www.a-levelmathstutor.com
topic notes [email protected]
Sine & Cosine Rules 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.
A-level Maths Tutor
www.a-levelmathstutor.com
[email protected]
Trigonometry A-level Maths Tutor
Pure Maths www.a-levelmathstutor.com
topic notes [email protected]
Example #1
Example #2
A-level Maths Tutor
www.a-levelmathstutor.com
[email protected]
Trigonometry A-level Maths Tutor
Pure Maths www.a-levelmathstutor.com
topic notes [email protected]
Example #3
A-level Maths Tutor
www.a-levelmathstutor.com
[email protected]
Pure Maths
Trigonometry A-level Maths Tutor
www.a-levelmathstutor.com
topic notes [email protected]
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.
Example #1
A-level Maths Tutor
www.a-levelmathstutor.com
[email protected]
Trigonometry A-level Maths Tutor
Pure Maths www.a-levelmathstutor.com
topic notes [email protected]
Example #2
A-level Maths Tutor
www.a-levelmathstutor.com
[email protected]
Pure Maths www.a-levelmathstutor.com
topic notes [email protected]
Sine & Cosine Rules 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.
A-level Maths Tutor
www.a-levelmathstutor.com
[email protected]
Trigonometry A-level Maths Tutor
Pure Maths www.a-levelmathstutor.com
topic notes [email protected]
Example #1
Example #2
A-level Maths Tutor
www.a-levelmathstutor.com
[email protected]
Trigonometry A-level Maths Tutor
Pure Maths www.a-levelmathstutor.com
topic notes [email protected]
Example #3
A-level Maths Tutor
www.a-levelmathstutor.com
[email protected]
Pure Maths
Trigonometry A-level Maths Tutor
www.a-levelmathstutor.com
topic notes [email protected]
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.
Example #1
A-level Maths Tutor
www.a-levelmathstutor.com
[email protected]
Trigonometry A-level Maths Tutor
Pure Maths www.a-levelmathstutor.com
topic notes [email protected]
Example #2
A-level Maths Tutor
www.a-levelmathstutor.com
[email protected]
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