Nature of the triangle or relation among sides from a trig condition

1. A.
   an isosceles triangle
2. B.
   an equilateral triangle
3. C.
   a right angled triangle
4. D.
   a scalene triangle

Tap an option to check your answer.

1. A.
   an isosceles triangle.
2. B.
   an equilateral triangle.
3. C.
   a right angled triangle.
4. D.
   an obtuse angled triangle.

Tap an option to check your answer.

1. A.
   $b^{2} - c^{2}$
2. B.
   $b + c$
3. C.
   $b^{2} + c^{2}$
4. D.
   $b - c$

Tap an option to check your answer.

1. A.
   $a = c$
2. B.
   $a = b$
3. C.
   $b = c$
4. D.
   $a^2 = b^2 + c^2$

Tap an option to check your answer.

1. A.
   $a^2, b^2, c^2$ form an Arithmetic Progression
2. B.
   $b^2, c^2, a^2$ form a Geometric Progression
3. C.
   $a^2 = b^2 + c^2$
4. D.
   $b^2 = a^2 + c^2$

Tap an option to check your answer.