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What is a radian?

In short, a radian is an angular measurement , very much like a degree, except one radian is a lot bigger than one degree, and it has some special properties. A radian can often seem like an unnecessarily co...
JM
Answered by Jack M. • Maths tutor
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How to be fully prepared for the exam?

practice practice practice
NR
Answered by Nazrin R. • Maths tutor
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The line AB has equation 5x + 3y + 3 = 0 and it intersects the line with equation 3x - 2y + 17 = 0 at the point B. Find the coordinates of B.

Two straight lines can intersect at only one point. To identify the point at which the lines cross, we make a simultaneous equation, and solve x and y from here, by firstly writing one equation on top of the...
JM
Answered by Jamie M. • Maths tutor
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How do I integrate by parts?

When we integrate by parts, we begin by setting the first term to equal some variable U, the second term in the integral we set to be dv/dx. Then we differentiate the U to obtain du/dx and integrate dv/dx to...
LM
Answered by Louis M. • Maths tutor
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Solve for -pi < x < pi: tanx = 4cotx + 3

tanx = 4cotx + 3 - Multiply through by tan to form a quadratic. tan^2x = 4 + 3tanx - Simplify by allowing y to equal tanx. y^2 = 4 + 3y - Rearange to standard quadratic form. y^2 - 3y -4 = 0 - Factorise. (y ...
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Answered by Zak L. • Maths tutor
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