सिद्ध कीजिये कि tan (45^(@) + A) + tan...

सिद्ध कीजिये कि
`tan (45^(@) + A) + tan (45^(@) -A) = 2sec 2A`

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सिद्ध कीजिये कि tan (45^(@) + A) + tan (45^(@) -A) = 2sec 2A
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tan (45 ^ (@) + A) + tan (45 ^ (@) - A) =
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tan(45^(@)+A)tan(45^(@)-A)=1
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(1-tan^(2)(45^(@)-A))/(1+tan^(2)(45^(@)-A)) is equal to
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(1- tan^(2) (45^(@)-A))/(1+tan^(2)(45^(@)=A)) =sin 2A
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सिद्ध कीजिये कि tan (45^(@) + A) + tan (45^(@) -A) = 2sec 2A
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सिद्ध कीजिये कि tan (45^(@) + A) - tan (45^(@) - A) = 2 tan 2A
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tan(45^(@)+ theta )*tan(45^(@)-theta)=
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(tan (45^(@) + alpha ) + tan ( 45^(@) - alpha ))/( cot (45^(@) + alpha...
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