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Prove: (1-cos(2A))/sin(2A) = tan(A)

Firstly we must lay out our double angle formulas which are required for this question: cos(2A) = 1-2sin^2(A) = 2cos^2(A)-1 sin(2A) = 2sin(A)cos(A) Working from LHS: (1-cos(2A))/sin(2A) Focusing on the denom...
RP
Answered by Rishi P. • Maths tutor
21543 Views

How should I structure my paragraphs when writing an essay in an exam?

To help yourself to write a clear and concise answer it can be helpful to follow the P.E.A/E.L structure when writing an essay in exams. P stands for the point you're making e.g. 'In Mary Shelly's Frankentei...
RW
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Starting with [extract from ch15], write about how Shelley presents the importance of love and acceptance to society.

Shelley presents the monster as someone who ‘yearned’ for love and ‘required kindness and sympathy’, showing that love and acceptance of others is felt by and needed by all people, even ones as different fro...
KH
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What's the difference between a public sector business and a public limited company?

The business world is divided into the public sector and private sector. Public sector businesses are run by the government and often provide necessities like electricity or bus services. The private sector ...
RG
33912 Views

What is ln(10)-ln(5)?

Laws of logs tells us that ln(a) - ln(b) = ln(a/b) Therefore ln(10)-ln(5) = ln(10/5) = ln(2)
JC
Answered by Jawad C. • Maths tutor
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