![If 2Sin²3θ -1=0. Then find 2cos6](https://www.gkseries.com/blog/wp-content/uploads/2024/04/If-2Sin²3θ-10.-Then-find-2cos6-.jpg)
If 2Sin²3θ -1=0. Then find 2cos6 ?
(a) -2
(b) 4
(c) 0
(d) 1
Sol:
![](https://www.gkseries.com/blog/wp-content/uploads/2024/04/image-61-836x1024.png)
If 2Sin²3θ -1=0. Then find 2cos6 ?
(a) -2
(b) 4
(c) 0
(d) 1
Sol:
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