Tan2x+secx=1/2
Helb
Hello,
It appears that you are in Trig Identity Hell. Stay there for a bit. There is much to learn.
Cordially,
Anon
>>7781173
What did I do wrong.
I've had a another try and got to ...
4sinxcosx +1 +2sin^2x=0
>>7781168
Remember Sin(2X) = 2sin(X)cos(X)
>>7781168
And sin^2(X) = (1+cos(2x))/2
>>7781252
I've got sin^2x=(1-cosx)/2 [not as +cosx]
Also where would I go from
4sinxcosx +1 +2sin^2x=0
>>7781168
Use(sin2x/cos2x) = tan 2x. and (1/cosx) = secx .
Then use the double angel identities for sin2x and cos2x.
>>7781295
Sorry guys the problem actually is
tan2x + sec2x = 0.5
From this I got to..
4sinxcosx + 1 +2sin^2x=0 what from here?
sin2x +1 = 0.5 cos2x
you can solve this right?
>>7781309
factor.
just use euler
>>7781414
2sinx (sinx+2cosx) +1 =0
Is one of the solutions -30 degrees ? If not how do I get the solution from this
>2sinx (sinx+2cosx) +1 =0
>Is one of the solutions -30 degrees ? If not how do I get the solution from this
>>7781416
>>7781168
OP here
Tan2x+1/cos2x=1/2
2sinx (sinx+2cosx)+1=0
Stuck on this point,Anyone?