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Trigonometry
What is sin90?
cos0=?
cosx repeats every?
tanx repeats every?
sin30=cos30 True or False
Solve sinx=cosx for x≤180
sin50=sin310 ,[object Object]
cos70=cos110 ,[object Object]
tan45=tan225 ,[object Object]
sin²x+cos²x=?
If sin²x+cos²x=1 Which of these are wrong? ,[object Object],[object Object],[object Object],[object Object]
Sin(A+B)= ,[object Object],[object Object],[object Object],[object Object]
Which of these are correct cos2A= ,[object Object],[object Object],[object Object],[object Object]

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