SOLUTION: Verify the identity: sin(a-b)- sin (a+b) - sin^2 b - cos^2 a = (sin b -cos a)^2 I am not sure which formulas to use to verify this. I was thinking the sun and difference formula

Question 869068: Verify the identity: sin(a-b)- sin (a+b) - sin^2 b - cos^2 a = (sin b -cos a)^2
I am not sure which formulas to use to verify this. I was thinking the sun and difference formulas but it did not work out when i tried them.

Answer by Fombitz(32388) (Show Source): You can put this solution on YOUR website!
Yes, those are the only ones you can use.

So,

Then,

So now this can't equal the right hand side
Check the problem setup and make sure it's correct.

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