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From Karnataka Open Educational Resources
→Problem-1
= Hints for difficult problems =
= Hints for difficult problems =
=='''Problem-1'''==
=='''Problem-1'''==
'''prove that''' <math>\frac{1-\tan^2 A}{1+\tan^2 A}=1-\sin^2 A</math>
'''prove that''' <math>\frac{1-\tan^2 A}{1+\tan^2 A}=1-\sin^2 A</math><br>
Solution of this problem [[Class10_trigonometry_problems#Problem-1 click here]]
= Project Ideas =
= Project Ideas =
