# PROPERTIES OF TRIANGLES, INTERMEDIATE MATHEMATICS FIRST YEAR PROBLEMS WITH SOLUTIONS ( class 11 maths)

Intermediate mathematics first year 1A Properties of Triangles solutions for some problems.

The solutions are very easy to understand.

You should study the textbook lesson Propreties of Triangles very well.

You can also see

Inter Maths 1A textbook solutions

Inter Maths 1B textbook solutions

Inter Maths IIA textbook solutions

Inter Maths IIB textbook solutions

Properties of Triangles text book solutions

Exercise 10(a)

Exercise 10(b)

Inter Maths Trigonometry text book solutions

Nios maths 311 book 1 Sets 1.1 solutions

Model papers for maths SSC class 10 and Inter

## SOLUTIONS OF PROPERTIES OF TRIANGLES, JUNIOR INTER TRIGONOMETRY

### Properties of Triangles solutions, Intermediate ( class 11 maths)

Short answer questions

Problem

In ∆ABC show that a = b cos C + c cos B

Problem

In ∆ ABC, if a = 3, b = 4 and sin A = 3/4, find the angle B.

Problem

If a = 6, b = 5, c = 9, then find the angle A

Problem

In a ∆ ABC, if (a + b + c) (b + c – a) = 3 bc, find A.

Problem

If a = 4, b = 5, c = 7, find cos B/2.

Problem

In ∆ ABC, if cos A = b cos B, prove that the triangle either isosceles or right angled.

Problem

If a = 26 cm, b = 30 cm and cos C = 63/65 then find ‘c’.

Problem

Prove that (b + c) cos A + (c + a) cos B + (a + b) cos C = a + b + c.

Problem

Prove that (b – a cos C) sin A = a cos A sin C

Problem 21

Problem

If a : b : c = 7 : 8 : 9, find cos A : cos B : cos C.

Problem

In ∆ABC, show that r = 4R sin A/2 sin B/2 sin C/2, where ‘r’ is the circle radius.

Problem

The perimeter of ∆ABC is 12 cm its radius is 1 cm. Then find the area of the triangle.

## PROPERTIES OF TRIANGLES, INTERMEDIATE MATHEMATICS FIRST YEAR PROBLEMS WITH SOLUTIONS

Long answer questions

Note : Observe the solutions of properties of triangles and try them in your own methods.

Some more solutions

Problem

If tan A/2 = 5/6 and tan C/2 = 2/5, determine the relation between a. b, c.

You can see the solutions for junior inter maths 1A

3. Matrices

Ncert solutions for maths class 6 some chapters

Ncert solutions for maths class 7 some chapters

Ncert solutions for maths class 8 some chapters

Ncert solutions for class 8 chapter 12

Maths solutions class 10