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If Cos2a + cos2b = 2, Then, tan2a tan2b=? |
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Answer» As per the question Cos2a + Cos2b = 2 cos function gives this value at (2n-1)π/2 where sin has value 0 at this place. so, tan2A.tan2B = sin2A.sin2B / cos2A.cos2B = 0/1 = 0 |
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