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Show that 2sin(x) =(4cos(x)-1)/tan(x) can be written as: 6cos^2(x)-cos(x)-2=0

Rearranging gives:4cos(x)-1 = 2sin(x)tan(x) Substituting in tan(x)=sin(x)/cos(x) gives:4cos(x)-1 = 2sin(x)(sin(x)/cos(x))2sin²(x)=4cos²(x)-4cos(x)Substituting in 2sin^2<...

Answered by Olivia T. • Maths tutor

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Why must a cell's genetic material be replicates before nuclear division of the cell? (2 Marks)

The new cell must be a genetically identical copy of the first cell. Both daughter cells must receive a full copy of the DNA.

Answered by Olivia T. • Biology tutor

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How should I structure a 16-mark question? (AQA)

A 16-mark question can be broken down into two or three objectives: AO1 (content), AO2 (application) and AO3 (evaluation). Depending on the question you will be asked for just AO1 and AO3 or AO1, AO2 and ...

Answered by Conor S. • Psychology tutor

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The General Form of the equation of a circle is x^2 + y^2 + 2gx +2fy + c = 0. Find the centre of the circle and the radius of the circle in terms of g f and c.

Given a circle in the general form you can complete the square to change it into the standard form.x²+ 2gx + y²+2fy +c = 0 (1). General form of an equation which has the completing...

Answered by Rushabh S. • Maths tutor

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