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Prove that 2cos? = 2^1/2 + 2^1/2 + 2cos 4? 2^1/2 means root 2.

Prove that 2cos? = 2^1/2 + 2^1/2 + 2cos 4?
2^1/2 means root 2.

Grade:10

1 Answers

Vivek Nigam
28 Points
13 years ago

wait i will have to try it......hmmm.....

ok..

apply inverse trignometry rules...that will surely get you towards the solution!

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