Prove:- cos² Q + sin²0 = 1
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Step-by-step explanation:
If you know the sin , cos Tan table
Put Q = 45°
But sin45 = cos45 = 1/√2
So sin²45 + cos²45 = 1/2 + 1/2 = 1
Similar you can put any value such as 0 , 30 , 90 etc
Your answer will be one.
Hence proved
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