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

• 3:5:2 A
• 
  B
• 3:2:1 C
• 1:2:3 D

In any triangle ABC, law of sines is:

• 
  A
• 
  B
• 
  C
• 
  D

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

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

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

• 
  A
• 
  B
• 
  C
• none of these D

If 2s = a + b + c, where a, b, c are the sides of a triangle ABC, then area of triangle ABC is given by:

• 
  A
• 
  B
• 
  C
• 
  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

r r₁ r₂ r₃ =

• 
  A
• 
  B
• 
  C
• abc D

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

• 
  A
• 
  B
• 
  C
• all of these D

r₃ =

• 
  A
• 
  B
• 
  C
• 
  D

In a triangle ABC if a² - b² + c² = ac then < ß =

• 
  A
• 
  B
• 
  C
• 
  D

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

• 
  A
• 
  B
• 
  C
• 
  D

• 
  A
• 
  B
• 
  C
• 
  D

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

• 
  A
• 
  B
• 
  C
• 
  D

The lengths of the sides of a triangle are proportional to the sines of the opposite angles to the sides. This is known as:

• The law of sines A
• The law of cosines B
• The law of tangents C
• The fundamental law D

If the elevation of the sun is 30°, the length of the shadow cast by a tower of 150m height is:

• 
  A
• 
  B
• 
  C
• none D

In triangle ABC, If Γ = 90° then:

• 
  A
• 
  B
• 
  C
• b = c + a D

With usual notations for triangle R equals:

• 
  A
• 
  B
• 
  C
• 
  D

In any triangle ABC, law of tangents is:

• 
  A
• 
  B
• 
  C
• all of these D