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This question was asked in Ex 2.2, 21

Value of cosπ is -1 or not please tell me

Anurag Yadav's image
Anurag Yadav
Dec. 20, 2017, 2:50 p.m.

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July 2, 2018, 4:11 p.m.

 

here value of π is 180 "degree"so it lies on second quadrant so its negative, if it is sin or cosec it will be definetly "+" or else are "-"

 

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