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Can you prove to me why cos^2(X) + sin^2(X) = 1?

The answer to this lies in the geometry of a circle. At GCSE you were taught that a circle has a radius (which I will call R ) which is the distance from the centre to a point on the circle. We put the centr...
JM
Answered by Jack M. • Maths tutor
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Examine the view that “‘A Streetcar Named Desire’ is not only the story of a desperate woman, but of a culture in the state of crisis”.

Indeed, Blanche DuBois is a woman in desperation. The initial monologue, ‘I, I, I took the blows’ conveys a gritty, realistic tone as Blanche has witnessed the death of those around her and now has nowhere e...
TD
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A) Raf, Jasmin and Carlos swim lengths of the pool for charity. Raf swims 30 more lengths than Jasmin. Jasmin swims four times as many lengths as Carlos. Altogether they swim 372 lengths. How many lengths each person swim?

NB: Algebra question. As Carlos swims the lowest amount of lengths compared to Raf and Freya, and the information from the question follows from the total amount Carlos has swam, we use the symbol 'S' to den...
FW
Answered by Fergus W. • Maths tutor
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In an Inspector calls, how does Eva smith represent the society of the time?

Eva smith, represents not only responsibility but forces the Birling family to feel and accept their guilt. She is the symbol of the working class within a capitalist society; 'smith' being a common surname ...
AW
Answered by Alexandra W. • English tutor
57779 Views

Express 216 as a product of its prime factors.

Answer: 2 3 x 3 3 Start by breaking 216 down into easily managed factors, for example the easiest would probably be 2 and 108. From there you can break down the non-prime factors into smaller factors. For 10...
HM
Answered by Hidayah M. • Maths tutor
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