DIRECTIONS COSINES AND DIRECTION RATIOS INTERMEDIATE FIRST YEAR MATHS FIRST YEAR 1B PROBLEMS WITH SOLUTIONS Solutions for intermediate mathematics first year 1A and 1B some chapters. The solutions are very simple to understand. First year 1A : Functions, mathematical induction, addition of vectors, trigonometric ratios upto transformations, trigonometric equations, inverse trigonometric functions, hyperbolic functions and [...]