Another trig question
https://www.quora.com/profile/Bravewarrior/p-144935243
Here is the question and its solution. Can someone please explain the second line of the solution to part b? I'm confused on how 6cos squared x minus 3sin2x suddenly becomes 6cos squared x plus 3sin2x.
Here is the question and its solution. Can someone please explain the second line of the solution to part b? I'm confused on how 6cos squared x minus 3sin2x suddenly becomes 6cos squared x plus 3sin2x.
Original post by pigeonwarrior
https://www.quora.com/profile/Bravewarrior/p-144935243
Here is the question and its solution. Can someone please explain the second line of the solution to part b? I'm confused on how 6cos squared x minus 3sin2x suddenly becomes 6cos squared x plus 3sin2x.
Here is the question and its solution. Can someone please explain the second line of the solution to part b? I'm confused on how 6cos squared x minus 3sin2x suddenly becomes 6cos squared x plus 3sin2x.
Typo. On the next line its negative again. Similarly on the following line there is a cos^2/x^2 typo. Really its best to try and work through it yourself and only glance at the ms for hints, if really necessary.
Original post by mqb2766
Typo. On the next line its negative again. Similarly on the following line there is a cos^2/x^2 typo. Really its best to try and work through it yourself and only glance at the ms for hints, if really necessary.
Ok will do! Thank you 😁
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