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A strong A-Level music essay should mainly contain the identification and analysis of some of the key musical features within the given piece, and should also provide some information about the musical period in which it was written and how the period links to those features.A helpful way to begin finding points for a music essay is to remember the mnemonic "MRS HITT". This stands for all the important musical features that you will want to address within your essay; M- melody, R - rhythm, S - structure, H- harmony, I- instrumentation, T- texture, T- tonality. Identify features of the given piece of music using these headings to guide you; for example, in Debussy's Sarabande, this might include commenting on the fact that the texture of the piece is largely homophonic, or the harmony is non-functional. To make this a coherent and flowing piece of work, you will want to expand on these basic points and give some examples of them in the work using bar numbers.After outlining each point, providing a comment linking to the historical and musical context will help to strengthen your answer. This will require learning about the different musical periods and being able to identify the features of each. To use Debussy's Sarabande as an example, you might choose to comment on the fact that the harmony is non-functional, and then go on to say that this is characteristic of the 20th Century/Impressionist style in which Debussy was writing, as they aimed to use chords for colour and expression, rather than having a specific harmonic function, as in the Classical period.

Using the knowledge of a² = b² + c² - 2bcCos(A) Rearrange to aquire Cos(A) = (b² + c² - a²)/2bc Then input the values to obtain the angles of 42, 69, 69.

Any chemical that dissociates to give an H⁺ ion is classified as an acid.  There are stong and weak acids but at GCSE you only need to know some key reactions which apply to both weak and strong acids.  acid + metal = salt of the acid + H₂ gas.  acid + base = salt of acid + H₂O  acid + carbonate = CO₂  + H₂O + salt of acid  Each time the salt of the acid is named as follows:  If the acid is HCl the compound will be a metal chloride,  If the acid is H₂SO₄ the salt will be a metal suphate Similarly, if the acid is ethanoic or methanoic acid, the salt will be an ethanoate or a methanoate respectively.  eg. ethanoic acid + potassium hydroxide = potassium ethanoate + water

The key to a good essay is planning ahead. Firstly look at the question and form the answer by putting down the main points, which will then become your paragraphs. Never put down more than 4 main points because you will run out of time trying to explain them. All essays start with an introduction where you clearly have to establish that you know the novel/poem/play well and that you intend to answer the question and directly as possible. You must do this by writing an introductory sentence where you clearly answer the question eg. In Shakespeare's famous tragedy 'Othello', the theme of jealousy is reinforced in a number of ways, predominantly through striking imagery, interactions between the characters and diction used by Shakespeare. Avoid long lists and aim to only identify the strongest points in your introduction. A well written introduction sets a good mood for the entire essay. REMEMBER TO ENSURE THAT YOU REFER TO THE QUESTION IN YOUR INTRODUCTION.  The body of your essay is critical if you want to achieve a high grade. The golden rule here is QUALITY>QUANTITY as it is much better to write 3 or 4 great, detailed paragraphs than to fit in many small and hardly relevant points. Each paragraph must begin with a sentence which clearly identifies what you will be explaining within your paragraph. This is called a Topic Sentence eg. Shakespeare uses imagery as a key way to reinforce the theme of jealousy which haunts the play throughout.  You would them move on to give examples to justify your point and the main way to do that is bringing up examples from the text and quoting them. QUOTES MUST NEVER BREAK THE FLOW OF YOUR WRITING so never start the sentence with a quote and then explain it; carefully embed the quote into your writing eg. Through the use of the image 'green eyed-monster' Shakespeare grotesquely personifies jealousy which gives it a stronger and more striking presence.  Do not put in too many quotes, instead take care to explain their effect. Some times a quote is not necessary to convey a point and you can simply bring up an instance from the text. Usually 2-4 quotes per essay is sufficient.  Finally you have a conclusion in which you NEVER introduce new points, but simply summarize the points you have made in your paragraphs. Remember that a conclusion is your last chance to show off your language skills to the examiner.  Always remember to be concise, use shorter, simpler sentences if in doubt. Though examiners do not look for flawless spelling, your grammar and punctuation are key to making your writing flow. Make sure you practice timing yourself with essays to ensure you know how much you can write in a give amount of time.