When do I use Sin, Cos and Tan?

Just remember SOH,CAH,TOA. It sounds like Sock-A-Toe-Ah. Quite strange but extremely effective. SOH means Sin=Opposite/Hypotenuse Cos=Adjacent/Hypotenuse Tan=Opposite/Adjacent The three letters in each abbreviation represent the first letter in each word of the formulae.

DC

Related Maths GCSE answers

All answers ▸

P has coordinates (3,4), Q has coordinate (a,b), a line perpendicular to PQ has equation 3x+2y=7. Find an expression for b in terms of a


(root18 +root2)sqaured/(root8-2). Give answer in form A(B+rootC) where A,B and C are integers


Expand and simplify (x-3)(3x+5)


Solve for x: 2x^2 + 2x -24 = 0