SOLUTION: Please help me find Cos(A-b) in the following equation. Equation: https://s28.postimg.org/fbpu1fv25/tan_a_5.png Thank you.

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Question 1064902: Please help me find Cos(A-b) in the following equation.
Equation: https://s28.postimg.org/fbpu1fv25/tan_a_5.png
Thank you.

Answer by Fombitz(32388)   (Show Source): You can put this solution on YOUR website!

so,


and


.
.
.
Now use the formula,


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