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Using your knowledge that tan(x) = sin(x) / cos(x) , how would you write 4/7tan(x)

Since tanx = sinx / cosx that means that the inverse of tan must = the inverse of sinx / cosx which is cosx / sinx . So we know that 1/tanx = cosx . Now all we have to do is apply the multiple 4/7 becaus...

Answered by • Maths tutor

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A is the point with coordinates (5, 9) B is the point with coordinates (d, 15) The gradient of the line AB is 3 Work out the value of d.

A straight line equation is defined as y=mx+c where m is the gradient and c is the intercept. Since the gradient is already said to be 3 we can substitute this in to mean the equation for AB is y=3x+c. Si...

Answered by Tarun A. • Maths tutor

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How do I remember and use the VANDERTRAMP verbs

Firstly we need to learn how to remember them - I have a song which works for me. Secondly, after writing them out we will look at how they use the verb etre (not avoir) and then the past participle.

Answered by Eloise D. • French tutor

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Explain the difference between active transport and osmosis (3)

i. Osmosis involves the transport of water only whereas Active Transport involves the transport of molecules/ionsii. Osmosis involves the transport along the concentration gradient whereas Active transpor...

Answered by Vera O. • Biology tutor

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