• 
  A
• 
  B
• 
  C
• 
  D

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

• 
  A
• 
  B
• 
  C
• 
  D

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

• 
  A
• 
  B
• 
  C
• all of above 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

In any triangle ABC, law of cosines 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 passing though the vertices of a triangle is known as:

• 
  A
• 
  B
• 
  C
• 
  D

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

• 
  A
• 
  B
• 
  C
• 
  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

The in-radius r of a triangle is given by:

• 
  A
• 
  B
• 
  C
• 
  D

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

• 
  A
• 
  B
• 
  C
• none of these D

When two sides and included angle is given, then area of triangle is given by:

• 
  A
• 
  B
• 
  C
• all of these D

• 3:5:2 A
• 
  B
• 3:2:1 C
• 1:2:3 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

If triangle ABC, If ß = 90° then:

• 
  A
• 
  B
• 
  C
• none of these D

In any triangle ABC, law of sines is:

• 
  A
• 
  B
• 
  C
• 
  D

In any triangle ABC, law of tangents is:

• 
  A
• 
  B
• 
  C
• all of these D

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

• 
  A
• 
  B
• 
  C
• 
  D

• 
  A
• 
  B
• 
  C
• 
  D

• 
  A
• 
  B
• 
  C
• 
  D