AP and TS EAMCET Engineering Model Paper 5

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Question : 21 of 160

Marks: +1, -0

If cos‌x+cos‌y+cos‌z=0 =sin‌x+sin‌y+sin‌z , then possible value of cos2

(x−y)

2

is

−
1
2
−
1
√2
1
4
1
√2

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