Find it if you can
Level
pending
If cosA=√√2+1/√2√2,then find the value of cos2A
(√3+√2)
1/√2
√3
√3+1/5
√2+1
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1 solution
Cos2A=2[√2+1/2√2]-1=√2+1/√2-1=1/√2