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How can I calculate the maximum value of the compound angle formulae Rsin(x+a) and Rcos(x+a)?

Often, the compound angle formulae can seem quite offputting, especially since exam pressures can mean the random "R" at the front of an angle addition formulae appears confusing. However, findi...

LB
Answered by Luke B. Maths tutor
13942 Views

How do I work out the nth term?

The nth term falls into the topic of linear sequences.

A linear sequence is a set of numbers (such as "1, 2, 3, 4, ...") that are connected by a rule

LB
Answered by Luke B. Maths tutor
188923 Views

Solve the simultaneous equations: 3x+2y=4 and 4x+5y=17

To solve this equation we need to make it so the x's or the y's of each equation are equal. To do this we need to multiply one or both equations so we can take or add one of the equations to the other. We...

AH
Answered by Arron H. Maths tutor
17068 Views

Why is atrial repolarisation not present on an ECG yet ventricular repolarisation is?

This is because the QRS complex on the ECG (which represents the Ventricular depolarisation) is at such a high magnitude, it masks the electrical signals that occur due to atrial repolarisation as these t...

SG
3278 Views

A rectangle has an area of 20cm^2. Its length and width are enlarged by a factor of 3. Find the area of the enlarged rectangle.

I'd start by drawing out any rectangle with an area of 20cm^2 and labelling the length and width. Any correct combination will do (i.e. 2 X 10, 4 X 5, 20 X 1 etc.). In this example, I will use 4 X 5 Then ...

DS
Answered by Daniel S. Maths tutor
15660 Views

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