How do you find an angle in a right-angled triangle when you are given two of its side's lengths?
You must first identify the names of the two sides in relation to the angle you are trying to find out. The technique "sohcahtoa" is generally very helpful in working this out. This abbreviation stands for:
Sine=Opposite/Hypotenuse
Cosine=Adjacent/Hypotenuse
Tangent=Opposite/Adjacent
Then to find the angle, you simply use the inverse of the function you have found you needed (found on your calculator) on the fraction and it should come out with the answer.
TW
Related Maths A Level answers
All answers ▸Integrate 4x^3 + 6x^2 +4x + 3
The line y=5-x intersects the curve y=x^2-3x+2 at the points P and Q. Find the (x,y) coordinates of P and Q.
A tank is filled with water up to the height H0. At the bottom of the tank, there is a tap which is opened at t=0. How does the height of liquid change with time?(Hint: dH/dt is proportional to -H)
What is the determinant of a 2 by 2 matrix?