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Prove that sec^2(θ) + cosec^2(θ) = sec^2(θ) * cosec^2(θ)

These problems can be tricky as they use unfamiliar trigonometric functions such as secant and cosecant. It is much easier to approach these problems by replacing these trigonometric functions with more fami...
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Answered by Hugh R. • Maths tutor
12818 Views

Two immobile point charges Q1 and Q2 of values +q and +3q respectively are some distance apart. Q3, with value +2q is placed between them and does not move. What is the ratio of the distance between Q3 and Q2 to the distance between Q1 and Q3?

As Q 3 remains stationary, it is clear that it is not accelerating. Thus we can deduce from Newton's second law that there is no resultant force acting upon the charge. However there are still electrostatic ...
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Answered by Hugh R. • Physics tutor
4745 Views

HAT Question 3: What does a source reveal about a society?

Question three is so daunting because, aside from it being the longest question of the paper, you are probably unused to analysing sources without knowing their context. Usually at A-Level or GCSE, you are u...
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Answered by Tutor87041 D. • HAT tutor
4365 Views

A cuboid has sides such that the longest side is two units more than the shortest side, and the middle length side is one unit longer than the shortest side. The total surface area of the cuboid is 52 units². What is the length of the shortest side?

A cuboid has sides such that the longest side is two units more than the shortest side, and the middle length side is one unit longer than the shortest side. The total surface area of the cuboid is 52 units²...
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Answered by Roseanna M. • Maths tutor
7013 Views

Explain what the CPI is and how it’s used to measure inflation.

Inflation is a continuous or persistent rise in the price level, or can be seen a fall in the value of money (if bread goes from costing £1 a loaf to £1.10, it means £1 becomes less valuable with the increas...
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Answered by Charis L. • Economics tutor
8294 Views