All About Triangles - Part - 8

All About Triangles - Part - 8

1. In Acute angle triangle all three angles are acute.

True
False

2. In Obtuse angle triangle two angles are obtuse and one is acute.

True
False

3. Right angle triangle has one right angle, one acute angle and one obtuse angle.

False
True

4. According to angles triangles are classified into?

Acute angle triangle, Obtuse angle triangle and equilateral angle triangle.
Acute angle triangle, Obtuse angle triangle and Right angle triangle.
Acute angle triangle, Obtuse angle triangle, Right angle triangle and , isosceles triangle.
Acute angle triangle, isosceles triangle and Right angle triangle.

5. In a right angle triangle sin(theta) =

c/a
a / c
a + b + c

6. In a right angle triangle cos(theta) =

1/ tan(theta) = b / a
a + b + c
b / c
a / b

7. In a right angle triangle tan(theta) =

a + b + c
c / a
1/ tan(theta) = b / a
sin(theta) / cos(theta) = a / b

8. In a right angle triangle csc(theta) =

1 / sin(theta) = c / a
1 / cos(theta) = c / b
1/ tan(theta) = b / a
a + b + c

9. In a right angle triangle sec(theta) =

b. c / b
a. a + b + c
c. b & d are correct
d. 1 / cos(theta)

10. In a right angle triangle cot(theta) =

b. c / b
c. 1/ tan(theta
a. b / a
d. a & c are correct

11. In a right angle triangle Perimeter of triangle =

a² + b² + c²
a² + b + c
a + b + c
abc

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