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How can we calculate the sinus of 120°?

We can observe that120° represents the sum of two common angles: 30° and 90°. So we can rewrite sin(120°) as sin(30°+90°). Now we are going to use this trigonometric formula in order to calculate the sinuns:...
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Answered by Monica M. • Maths tutor
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How do I expand a factorised expression?

Take example (x+3)(x-4) We use FOIL - first, outer, inner, last We multiply each part by the other part. First -> x times x = x 2 . Outer -> x times -4 = -4x (remember the minus infront of the 4), Inne...
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Answered by Sarah K. • Maths tutor
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What affect do mutations to pathogens have on the effectiveness of vaccinations, and why is this important?

Mutations of pathogens produce new strains. Vaccinations may no longer be effective against these new strains. Vaccinations would kill non-resistant strain pathogens. However, resistant strain pathogens woul...
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Answered by Sophie R. • Biology tutor
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What is the process by which vaccines protect individuals against infectious diseases?

Vaccines are small quantities of dead or inactive forms of a pathogen (disease). Vaccines stimulate white blood cells to produce antibodies. These antibodies destroy the pathogensthis makes the person immune...
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Answered by Sophie R. • Biology tutor
3922 Views

Explain the importance of having a unique selling point (USP)

A unique selling point (USP) is a differential factor, which enables the business to distinguish itself from other competitors in the market place. As such, a USP is important as it provides more value for m...
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