x+y=225degrees then (1+tanx)(1+tany)
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If x + y = 45^∘ , then prove that :(a) ( 1 + tanx ) ( 1 + tany ) = 2 (b) ( cotx - 1 ) ( coty - 1 ) = 2
Missing: 225degrees | Must include: 225degrees
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x + y = 45 (a)tan45 = tan(x + y) 1 = tanx+tany1 - tanxtany 1 + 1 - tanxtany = tanx + tany + 1 2 = (1 + tanx )(1 + tany ) (b)cot45 = cot(x ... More
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