SOLUTION: cos(tan^(-1)u-cos^(-1)v) we are supposed to write it as an algebraic expression and I just don't understand how to do it at all

SOLUTION: cos(tan^(-1)u-cos^(-1)v) we are supposed to write it as an algebraic expression and I just don't understand how to do it at all

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Question 1129444: cos(tan^(-1)u-cos^(-1)v) we are supposed to write it as an algebraic expression and I just don't understand how to do it at all
Answer by MathLover1(20850) (Show Source): You can put this solution on YOUR website!

making
=>
=>
then,
, ->recall trig. triangle
, ,
so,

since

we will find and

and for

,,

And using the cos of difference formula:

and since , we have

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