First Year Mathematics Chapter 12 Online MCQ Test for 1st Year Mathematics Chapter 12 (Application of Trigonometry)

In a triangle ABC, (s - a)(s - b) = s(s - c), then the angle Γ =

• 
  A
• 
  B
• 
  C
• 
  D

r₁ =

• 
  A
• 
  B
• 
  C
• 
  D

In 2s = a + b + , then in any triangle ABC:

• 
  A
• 
  B
• 
  C
• all of above D

If α, ß, Γ are the angles of a oblique triangle, then:

• α = 90° A
• ß = 90° B
• Γ = 90° C
• none of these D

If triangle ABC, If ß = 90° then:

• 
  A
• 
  B
• 
  C
• none of these D

• 
  A
• 
  B
• 
  C
• 
  D

In a right isoceles triangle, one acute angle is:

• 30° A
• 45° B
• 60° C
• 75° D

In triangle the length of the sides are 7, 4√3 and √13. Then the smallest angle is:

• 15° A
• 30° B
• 60° C
• 45° D

A triangle which is not right angle triangle called ________ triangle:

• acute A
• obtuse B
• right C
• oblique D

In triangle ABC, if α = 90° then:

• 
  A
• 
  B
• 
  C
• none of these D

r₃ =

• 
  A
• 
  B
• 
  C
• 
  D

A circle which touches one side of a triangle externally and the other two produces sides internally is known as:

• 
  A
• 
  B
• 
  C
• 
  D

• r₁ A
• r₂ B
• r₃ C
• r D

A circle drawn inside a triangle and touching its sides is known as:

• 
  A
• 
  B
• 
  C
• 
  D

In triangle ABC, If Γ = 90° then:

• 
  A
• 
  B
• 
  C
• b = c + a D

• 
  A
• 
  B
• 
  C
• 
  D

• right angled A
• equilateral B
• isosceles C
• obtuse angled D

A circle passing though the vertices of a triangle is known as:

• 
  A
• 
  B
• 
  C
• 
  D

• 3:5:2 A
• 
  B
• 3:2:1 C
• 1:2:3 D

The circum-radius R of a triangle is given by:

• 
  A
• 
  B
• 
  C
• 
  D