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Introduction
· This Chapter involves learning 2
Trigonometrical Identities
· We will be using these to rewrite
expressions
· We will also be looking at solving
Trigonometrical Equations…read more

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Trigonometrical Identities and Equations
You need to be able to use the O A O
Trigonometrical identities S H C H T A
You do not need to be able to prove either
of these Identities, but it is useful to see
where they come from.
You should remember the `SOHCAHTOA'
rule from GCSE Maths. Replacing these in the original Equation...
Cancel
the H's
10A…read more

Slide 5

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Trigonometrical Identities and Equations
You need to be able to use the O A O
Trigonometrical identities S H C H T A
You do not need to be able to prove either Hyp
of these Identities, but it is useful to see Opp
1
where they come from.
You should remember the `SOHCAHTOA'
rule from GCSE Maths.
Adj
You should also remember Pythagoras'
Theorem Replace a,
b and c
This is how it
is written
10A…read more

Slide 6

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Trigonometrical Identities and Equations
You need to be able to use the
Trigonometrical identities
The Identities are unchanged if
there is a value in front of .
10A…read more

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