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If you are trying to find the sine of an angle, remember: SOH
The sine of an angle (S)= the length of the opposite side (O) / the length of the hypotenuse (H)
If you are try...
Begin by adding the 2 ratio parts (i.e. the numbers which make up the ratio) so 8+5 = 13.
Then divide the total sum by the sum of the ratio parts. Thus £650/13 = £50.
Multip...
You must be careful with these sorts of questions as although 1/(5-2x) is equivalent to (5-2x)^-1, when you integrate you would add one to the power and divide by the new power. But if you were to add one...
First we state the formula for sin(x+y)
sin(x+y) = sin(x)cos(y) + cos(x)sin(y)
Letting y = 2x
sin(x+2x) = sin(x)cos(2x) + cos(x)sin(2x)
Now sin(2...
Using integration by parts, we can re-write the integral of ln(x) as (xln(x) - int(x(1/x))) = x*ln(x) - x
Therefore, evaluating between 2 and 4 gives us (4ln(4) - 4) - (2KRAnswered by Kyle R. • Maths tutor3968 Views
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