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How do I revise for an English exam?

Whether you are studying a play, novel or poem the key revision techniques are very similar. Firstly, I would say the most important aspect is to familarise yourself with the text itself. For example, with a...
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Answered by Isobel P. • English tutor
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What is the difference the secondary structure and tertiary structure of a protein?

Secondary Structure The secondary structure of a protein refers to the basic foldings of a protein the forms of: 1. an alpha helix 2. a beta-pleated sheet These foldings are determined by hydrogen bonds. The...
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Answered by Daniella A. • Biology tutor
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What is the difference between primary and secondary sources and when should they be used?

Primary sources are written by those who experienced the topic in question first hand. They come in a variety of different formats including but not limited to journal entries, letters, recorded interviews, ...
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Answered by Mary B. • History tutor
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Using Pythagoras Theorem find the length of the hypotenuse of a right triangle where a=7 cm and b=11 cm. Round to the nearest tenth

Pythagos Theorem states that a^2 + b^2 = c^2 So using the figures we are given the equation would look like this: 7^2 + 11^2 = c^2 We square the numbers we can and then get: 49 + 121 = c^2 We add the left ha...
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Answered by Mary B. • Maths tutor
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Using Trigonometric Identities prove that [(tan^2x)(cosecx)]/sinx=sec^2x

You should begin by identifying all the Trigonometric Identities that may be useful in this problem. Specifically, cosecx=1/sinx tanx=sinx/cosx 1/cosx=secx and possibly tan^2x + 1= sec^2x. I began by changin...
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Answered by Mary B. • Maths tutor
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