What is the value of -cos nπ
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⭐hey mate!!
=) value of cos nπ depends on the value of n whether it is even or odd.
=> when n is even its value is 1
=> when value is odd its value is -1
so combining both ..
=> cos nπ = ( -1 ) ^n
so -cos nπ = -( -1 ) ^n
___________________________
⭐Thanks
=) value of cos nπ depends on the value of n whether it is even or odd.
=> when n is even its value is 1
=> when value is odd its value is -1
so combining both ..
=> cos nπ = ( -1 ) ^n
so -cos nπ = -( -1 ) ^n
___________________________
⭐Thanks
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