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anonymous
 5 years ago
cos²β(1+tan²β)=1. Have to show this is an identity.
anonymous
 5 years ago
cos²β(1+tan²β)=1. Have to show this is an identity.

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amistre64
 5 years ago
Best ResponseYou've already chosen the best response.11+tan^2 = sec^2 for starters :) and sec^2 = 1/cos^2 cos^2  = 1 cos^2

amistre64
 5 years ago
Best ResponseYou've already chosen the best response.1or you could just distribute it thru and get: cos^2 + sin^2 = 1

anonymous
 5 years ago
Best ResponseYou've already chosen the best response.0you make it look so easy

amistre64
 5 years ago
Best ResponseYou've already chosen the best response.1lol..... i blam ethe guys who invented it ;)
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