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How can the cosine rule be derived?

Sorry in advance for the lack of a diagram, which would have made this explanation so much clearer. Also, the published version of this seems to ignore Unicode formatting, so I will add underscores (_)...

PT
Answered by Peter T. Maths tutor
4121 Views

What is the pluperfect tense and how is it formed?

Subject: French/A Level

Q: How do I form the pluperfect and when do I use it? 

A: 

In French, the pluperfect...

EW
Answered by Emily W. French tutor
7430 Views

What makes an A* EPQ?

Getting an A* on your EPQ begins with picking a creative, individual and exciting question that is both specific and sufficiently broad to provide a detailed response. Above all, the most successful EP...

EW
59108 Views

How do I get an A* in my English Literature A-Level exam?

Depending on what examination board (AQA, CIE, OCR) you do, there will be different requirements for you. However, as a general rule it is important that you try and include these things if you are loo...

LB
73460 Views

How does skeletal muscle contract?

Skeletal muscle (one of the three types of muscle in our body) contracts by excitation-contraction coupling, or the sliding-filament theory.

It all starts when an action potential fires a...

LN
20392 Views

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