Trig function question (1 Viewer)

[Joshmosh2]

How do you find the exact value of tan285 ?

Is it something along lines of
tan180 + tan(60+45)?

Can you even do this? o.o

 

[photastic]

It requires extension 1 and you approached it wrong.

 

[braintic]

No. You mean tan (180 + (60 + 45)), which is not the same thing as yours.

Better: tan (240+45)

As stated, you then need Ext 1 work.

 

[trungduong12]

Tan285 = -2- (sqrt3)

Am i right ??
XD


Sent from my iPhone using Tapatalk

 

[faisalabdul16]

tan285 = -tan75
= -[tan(45+30)]
= -(root3+1)/root3-1

 

[trungduong12]

tan285 = -tan75
= -[tan(45+30)]
= -(root3+1)/root3-1

Hmmm yeah~~
This is right
Thats what i got -2- root3
^___^



Sent from my iPhone using Tapatalk

 

[Joshmosh2]

tan285 = -tan75
= -[tan(45+30)]
= -(root3+1)/root3-1

yes, this makes more sense but apparently i got the same answer using my initial method

 

[braintic]

yes, this makes more sense but apparently i got the same answer using my initial method

Your original method worked only because tan 180 is zero. In general, it wouldn't work.