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ABC is an acute-angled triangle. BA=7cm and BC=8cm. The area of triangle ABC is 18 cm^2 . Work out the size of angle BAC. Give your answer correct to 3 significant figures. You must show all your working.

Draw the triangle ABC and fill in the information given i.e. lengths of BA and BC and identify the angle we are looking for i.e angle BAC Looking at the formulas given identify which one we can use. We have ...
AM
Answered by Anna M. • Maths tutor
12549 Views

How can I score well in the synoptic essay?

There are two main parts to the synoptic essay, the subject/specification content which will probably make up around 80-90% of your essay, and then the extra content, which is composed of things above the sy...
CR
Answered by Callum R. • Biology tutor
5197 Views

How shall I plan my revision? There's so much to learn!

It can seem daunting when you have got a lot of case studies to revise for your GCSE exams, but the best way to manage it is to break it down. We'll split it into (1) structured content revision and (2) thor...
HT
Answered by Helen T. • Geography tutor
2790 Views

What effect would a depreciation of the pound have on the UK economy?

One effect of the pound effectively becoming chepaer is that UK exports will increase. UK goods and services, relative to other countries, will appear less expenisve following the depreciation, duly increasi...
BH
5733 Views

What is the difference between LCM and HCF?

LCM stands for Lowest Common Multiple , and HCF stands for Highest Common Factor . The key to telling the difference between these two things is knowing the difference between a multiple and a factor . A mul...
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Answered by Joe C. • Maths tutor
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