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Jagdish Yadav

· started a discussion

· 1 Months ago

It is not mentioned that it is 1 degree for cos. (Question: 351436.0 )

When not defined we use radians. Please make necessary changes.

Question:

Consider the following:

1. sin2 1° + cos2 1 = 1

2. sec2 33° – cot2 57° = cosec2 37° – tan2 53°

Which of the above statement is/are correct? 

Options:
A)

1 only

B)

2 only

C)

Both 1 and 2

D)

Neither 1 nor 2

Solution:

Ans: (c)

  

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