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In trigonometry , how do you find the angles of a right angle triangle?

In order to do that, and this only works for right angled triangles, is using the sine, cosine, and tangent rules. An easy way to remember this is by using the acronym SOH, CAH, TOA that my teacher taught us...
AM
Answered by Aditya M. • Maths tutor
5499 Views

What is the probability to obtain exactly 2 heads out of 3 tosses of a fair coin?

We will figure out the general question first: if we have n consecutive events with two possible outcomes which we will tell "successes" and "failures" with probabilities p and 1-p, respe...
SG
Answered by Stamo G. • Maths tutor
4908 Views

y=20x-x^2-2x^3. Curve has a stationary point at the point M where x=-2. Find the x coordinate of the other stationary point of the curve and the value of the second derivative of both of these point, hence determining their nature.

Differentiate to get dy/dx=20-2x-6x^2Then stationary points occur when dy/dx = 0 so 0 = 20-2x-6x^2 Factorise to get x= -2, x=5/3Differentiate dy/dx to get second derivative = -2-12x at x=5/3 is -22 so max po...
EJ
Answered by Emily J. • Maths tutor
4476 Views

How would you find the coordinates of the intersections of a graph with the x and y axes, and the coordinates of any turning points?

Take the graph y = x 2 - 2x + 5 for example: In order to find the intersection with the y axis, set the x values in the equation equal to 0 as this is where the graph would cross the y axis:y = (0) 2 - 2(0) ...
SY
Answered by Simeon Y. • Maths tutor
17454 Views

Dan works 5 days a week. Is it cheaper to use car or bus? Bus weekly ticket = £19.50. Car drive is 24.2 miles, car does 32.3 miles per gallon of petrol, which costs £1.27 per litre. Use 1 gallon = 4.5 litres

Work out how many miles Dan does in a week if he drove. 24.2 x 5 = 121Work out how many gallons of petrol this would be. 121/32.3 = 3.746130031Convert into litres. 3.746130031 x 4.5 = 16.85758514Work out the...
EJ
Answered by Emily J. • Maths tutor
3899 Views