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Grade 12Trigonometry

i am not able to prove most of the identities
why its happening

Profile image of sai nagendra
11 Years agoGrade 12
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1 Answer

Profile image of Drake
11 Years ago
Just go through the formulas again and learn them by heart . 
Or u could refer a book of arihant . 
 
 
Hit approve if u got even a little help by my answer :)
Thanks .