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There is a right angled triangle with sides of 5cm, 12cm and 13cm. What is the size of the smallest angle?

By the sine rule, sin^-1(5/13)=22.6 degrees.Equally, by the cos^-1(12/13)=tan¹(5/12)=22.6 degrees.

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In trigonometry , how do you find the angles of a right angle triangle?

In order to do that, and this only works for right angled triangles, is using the sine, cosine, and tangent rules. An easy way to remember this is by using the acronym SOH, CAH, TOA that my teacher taught...

Answered by Aditya M. • Maths tutor

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Dan works 5 days a week. Is it cheaper to use car or bus? Bus weekly ticket = £19.50. Car drive is 24.2 miles, car does 32.3 miles per gallon of petrol, which costs £1.27 per litre. Use 1 gallon = 4.5 litres

Work out how many miles Dan does in a week if he drove. 24.2 x 5 = 121Work out how many gallons of petrol this would be. 121/32.3 = 3.746130031Convert into litres. 3.746130031 x 4.5 = 16.85758514Work out ...

Answered by Emily J. • Maths tutor

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Solve:

x² + y² = 25 ...

Answered by Bandana J. • Maths tutor

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Expand the following : (2x+3)(x-1)

We multiply the 2x in the first bracket by everything in the second bracket to give: 2x²-2xWe then multiply the 3 in the first bracket by everything in the second bracket to give: 3x-3Putting 2...

Answered by Samuel S. • Maths tutor

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