IN IDENTITY CAN WE USE DIFFERENT VARIABLE

Asked by bhargav | 14th Jun, 2013, 07:21: PM

Expert Answer:

Yes, you can use any variable in a given identity. like
 
sin^2A + cos^2A = 1
Now, if I change the variable from A to x, then 
sin^2x + cos^2x = 1 
 
You can not change the functions used, but variables are by definition variable, they can be changed. 

Answered by  | 15th Jun, 2013, 05:08: AM

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