Trigonometry sum and differences

[learningmathh]

Hi there, I'd be Grateful if you'd help me With this question:

sin ( x+u) + cos(x+v)= √2cos(x)

Find all angles when v is [0, 180>

I have no idea where to start from but I know the rules for sum and differences.

 

[Deleted member 4993]

Hi there, I'd be Grateful if you'd help me With this question:

sin ( x+u) + cos(x+v)= √2cos(x)

Find all angles when v is [0, 180>

I have no idea where to start from but I know the rules for sum and differences.

Please check your problem and confirm that you have u and v in that problem

 

[learningmathh]

Please check your problem and confirm that you have u and v in that problem

Yes it is correct. I've checked it twice now. And also I have the answer but I dont know how to get it there.

 

[Deleted member 4993]

Yes it is correct. I've checked it twice now. And also I have the answer but I dont know how to get it there.

You have given the range of v.

have you been given the range of u?

 

[learningmathh]

I think I left some information. The text says for all u, v is [0,180> so that for every x is as written up.

 

[learningmathh]

The answer is u=v=45 but how to get there?