Math, asked by 9292SAAD, 1 year ago

Solve questions no.83,84
please.

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Answered by kishanpentyala
0

83. \\ ( seca - coseca)(1 + tana + cota) \\  = seca + seca \: tana + seca \: cota \\  - coseca -  \: coseca \: tana -  \: coseca \: cota \\  = (seca \: tan \: a - coseca \: cota) + (seca -  \\  \:  \: coseca \: tana) + (seca \: cota - coseca) \\  = (seca \: tana - coseca \: cota) + (seca -  \\  \:  \: seca) + (coseca - coseca) \\  = (seca \: tana - coseca \: cota)
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