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highschoolmom2010
 2 years ago
trigonometric functions
highschoolmom2010
 2 years ago
trigonometric functions

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agent0smith
 2 years ago
Best ResponseYou've already chosen the best response.1Well, you can start by testing a couple of values, to disprove it immediately try A=30 and B=59 Tan30 + tan59 = tan89 ?

terenzreignz
 2 years ago
Best ResponseYou've already chosen the best response.1I for one, do not recall the tangent identity to be quite as simple as tan(A) + tan(B) = tan(A + B)...

agent0smith
 2 years ago
Best ResponseYou've already chosen the best response.1It's not @terenzreignz, but the question states for A+B< 90 which makes it not able to be an identity. But it's easy to disprove.

terenzreignz
 2 years ago
Best ResponseYou've already chosen the best response.1Why not tan(45) + tan(30) = tan(75) :)

pgpilot326
 2 years ago
Best ResponseYou've already chosen the best response.0tan 45 = 1. tan 22.5 <> .5

agent0smith
 2 years ago
Best ResponseYou've already chosen the best response.1^that also disproves it, @highschoolmom2010

katherine.ok
 2 years ago
Best ResponseYou've already chosen the best response.0basically tana+tanb= (sinacosb+sinbcosa)/cosacosb= sin(a+b)/cosacosb

terenzreignz
 2 years ago
Best ResponseYou've already chosen the best response.1At least we have exact values for these stuff :3 \[\Large \tan(45^o) = 1\\\Large \tan(30^o)=\frac1{\sqrt{3}}\]

agent0smith
 2 years ago
Best ResponseYou've already chosen the best response.1My reasoning for picking a A+B close to 90, was due to tan90 being undefined, so it's highly unlikely two smaller angles will give anything close to the tangent of an angle near 90

katherine.ok
 2 years ago
Best ResponseYou've already chosen the best response.0=(sinacosb+cosasinb)/cosacosb=/= sinasinb/cosacosb

katherine.ok
 2 years ago
Best ResponseYou've already chosen the best response.0Now i need to somehow prove sinacosb+sinbcosa=/=sinasinb...

agent0smith
 2 years ago
Best ResponseYou've already chosen the best response.1@katherine.ok based on her other questions, I don't think she's at the level of trigonometry where they're using proofs. I think it's more an analytical question.

pgpilot326
 2 years ago
Best ResponseYou've already chosen the best response.0tan 60 + tan (30) <> tan 30

katherine.ok
 2 years ago
Best ResponseYou've already chosen the best response.0I think as simple as this sound...

katherine.ok
 2 years ago
Best ResponseYou've already chosen the best response.0by using the tangent graph, adding a random point where x is (0,90),you will not get tan a+ tan b because it is not linear graph.

highschoolmom2010
 2 years ago
Best ResponseYou've already chosen the best response.0im lost on all of this tbh....
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