# Pair of straight lines intermediate mathematics first year chapter 4 solutions

**Mathematics intermediate** 1a and 1b solutions for some problems are available here. These are very simple to understand.

**Inter first year 1a** : Functions, mathematical inductions, addition of vectors, product of vectors and trigonometry.

**Inter first year 1b :** Locus, transformation of axes, the straight line, pair of straight lines, three dimensional coordinates, direction cosines & ratios and applications of derivatives.

**You can see the solutions for junior inter maths 1b**

1. Locus

5. Three dimensional coordinates

6. Direction cosines and direction ratios

7. The plane

12. Rate measure

**You can also see the solutions for junior inter maths 1A**

1. Functions

3. Matrices

6. Trigonometric ratios upto transformations 1

7. Trigonometric ratios upto transformations 2

8. Inverse trigonometric functions

## Coordinate geometry – pair of straight lines inter maths 1b

Note – Observe the solutions and try them in your own methods.

Inter maths trigonometry solutions

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