![If 2 cosθ =x+1/x , Find 2cos3θ](https://www.gkseries.com/blog/wp-content/uploads/2024/04/If-2-cosθ-x1-x-Find-2cos3θ.jpg)
If 2 cosθ =x+1/x , Find 2cos3θ?
![](https://www.gkseries.com/blog/wp-content/uploads/2024/04/image-69-1024x762.png)
Answer: Option B
Sol:
![](https://www.gkseries.com/blog/wp-content/uploads/2024/04/image-70-1024x799.png)
If 2 cosθ =x+1/x , Find 2cos3θ?
Answer: Option B
Sol:
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