trigonometric ratio याद रखने का कोई trick
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all school to college is the trick for learning positive negative signs of trigonometric functions
Priyanshu45216:
please explain in hindi
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har din usko padho rato nahi samjho roj padho ek bhi din mat chhodo
ये भी बात है हर चीज का shortcut नहीं होता है.
it is true
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