# Thread: solve for C: cos(270-D-C)+cos(C-90)=b

1. ## solve for C: cos(270-D-C)+cos(C-90)=b

Can some one help me solve this for C, Shamefully, I cant remember my HS math.
cos(270-D-C)+cos(C-90)=b

in this equation D and b are given variables and i have to find C value
for example: b=100, D=90

2. ## Re: solve for C: cos(270-D-C)+cos(C-90)=b

Do you want to find the value of the C or Cos C? the values b=100 and d=90 it is example or given?

3. ## Re: solve for C: cos(270-D-C)+cos(C-90)=b

Thanks srirahulan,
Here, b and D are just an example. I want to be able to find C for any given b and D values. That's why I want to solve it for C
This used to be easy when I was in high school, but alas, most of my math is gone now.
Any ideas?

### math solve cos dc

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