Original post by Oliviazh
How to solve the equation 2cos^2 x+sin2x=1...I know that I should put them into the form like cos(x+a), but I don't know what to do with the different angles cuz the first part is x but the second part is 2x
Do you recognise the left-hand-side? There's an identity you can use.
Original post by notnek
Do you recognise the left-hand-side? There's an identity you can use.
Do you recognise the left-hand-side? There's an identity you can use.
Thanks a lot
Quick Reply
Related discussions
- Do I need to know only 12 practicals for Science
- i need help on bio, chem and physics
- Help super urgent maths
- Medical School Requirements
- Gcse maths urgent help
- UK school choice
- Urgently need help with maths for GCSEs!
- revision help !! ( very urgent )
- chemistry alevel
- Choosing alevels help urgent
- Need help with IB physics and Math
- A Level Maths advice and help
- A level choices urgent
- Urgent mechanics question!!
- my gcse growth journey!
- Physics questions
- A-level urgent economics help
- A Level help (very urgent!!)
- Gcses
- Very very URGENT: Is taking both Business sl and Economics hl IB okay
Latest
Trending
Last reply 3 days ago
Did Cambridge maths students find maths and further maths a level very easy?Last reply 2 weeks ago
Edexcel A Level Mathematics Paper 2 unofficial mark scheme correct me if wrongMaths
71
Trending
Last reply 3 days ago
Did Cambridge maths students find maths and further maths a level very easy?Last reply 2 weeks ago
Edexcel A Level Mathematics Paper 2 unofficial mark scheme correct me if wrongMaths
71
