Question

Prove : 2 Tan inverse ( Cos X) = Tan inverse ( Cosec X)​

Answer 1

Answer:

. A beggar wrapped himself with a few layers of newspaper on a cold winter night. This helped him to keep himself warm because

[A]. Friction between the layers of newspaper produces heat.

[B]. Air trapped between the layers of newspaper is a bad conductor of heat.

[C]. Newspaper is a conductor of heat.

[D]. Newspaper is at a higher temperature then the temperature of the surroundings.

2. Which of the following statement is incorrect?

[A]. Joule (J) is the SI unit of Temperature.

[B]. Air, water and wood are the poor conductor of heat.

[C]. Movement of molecule of liquid possible through convection.

[D]. None of the above.

3. An Iron ball at 40 Degree Celsius is dropped in a mug containing water at 40 Degree Celsius. The heat will

[A].