Discuss with your friends about the following conditions:
What can you say about `cosec 0^(@) =(1)/( sin 0^(@) ) ? ` Is the defined ? Why ?

Discuss with your friends about the following conditions: What can you say about cot 0^(@) =(1)/( tan 0^(@) ) Is it defined ? Why ?

Discuss with your friends about the following conditions: sec 0^(@) =1 Why?

Discuss the nature of roots of the following equations. 2n^(2) +5n -1=0

Discuss the nature of roots of the following equations. 3d^(2) -2d +1=0

A point is in the XZ plane what can you say about its y coordinate

Discuss among your friends The value of sin A and cos A is always less than 1, Why?

Ovserve the above table What can you say about the values of sin A and cos A ,as the value of angle A increases from 0^(@) "to" 90 ^(@) ? If A ge B then sin ge sin B , Is the true? If A ge B , then cos A ge cos B , Is it true ? Discuss.

Answer the following questions: (b) What is so special about the combination e/m? Why do we not simply talk of e and m separately?

A plane electromagnetic wave travels in vacuum along z-direction. What can you say about the directions of its electric and magnetic field vectors? If the frequency of the wave is 30 MHz, what is its wavelength?

Examine if Rolle's theorem is applicable to any of the following functions. Can you say some thing about the converse of Rolle's theorem from these example? f(x)= [x]" for "x in [5, 9] .