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What is the root of i? give all solutions

Z=cos(PI/4) +sin(Pi/4)
Z=cos(5PI/4) +sin(5Pi/4)

Answered by Rajan S. • Further Mathematics tutor

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Explain and evaluate the ontological argument for the existence of God.

St Anselm's ontological argument defines God as being ‘that than which nothing greater can be conceived’. He bases his argument as being a reply to the fool who says there is no God (‘Fools say in their h...

Answered by • Religious Studies tutor

4969 Views

Can I have advice on how to write a personal statement for creative or arts subjects?

Writing a personal statement can be daunting, but it is actually a great way to introspect on how your interests have developed. With creative subjects, such as arts and humanities, relaying your relevant...

Answered by Nina H. • Personal Statements tutor

1658 Views

Give the IUPAC name of CH3CH2CH2CH2CH(OH)CN

First count the longest chain of carbons (6), therefore hexane.OH group is on the 2nd carbon, therefore 2-hydroxy.CN is a nitrile group.
Put together: 2-hydroxyhexanenitrile.

Answered by Meg P. • Chemistry tutor

7121 Views

Raya buys a van for £8500 plus VAT at 20%. Raya pays a deposit for the van. She then pays the rest of the cost in 12 equal payments of £531.25 each month. Find the ratio of the deposit Raya pays to the total of the 12 equal payments.

First find total cost with VAT. £85001.2 = £10200
To find deposit:£10200 - (12£531.25) = £ 3825
To find ratio:3825 : (12*531.25)3825 : 63751 : (6375/3825)1 : 1.6^.

Answered by Meg P. • Maths tutor

4558 Views