|Mar9-12, 03:20 PM||#1|
Sine of sum and difference with 3 values
1. The problem statement, all variables and given/known data
sin (90 - θ + λ)
= sin90cos(θ + λ) - cos90sin(θ + λ)
= cos(θ + λ)
The book says cos(θ - λ)
So are we both right and if so how can I manipulate mine to look like the books answer.
2. Relevant equations
3. The attempt at a solution
|Mar9-12, 04:08 PM||#2|
= sin90cos(θ - λ) - cos90sin(θ - λ)
|Mar9-12, 04:28 PM||#3|
Ah my old friend Tim.
I was surprised that 100's of people looked at this and nobody answered. I suspected this was a super easy question, as you just proved.
Thank you very much.
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