∆ABC এর \(\angle\)B=90°, AB=BC হলে, \(\angle\)C=60°.
বিবৃতিটি মিথ্যা ।
\(\tan C =\cfrac{AB}{BC}=\cfrac{BC}{BC}=1=tan 45^o\) [\(\because AB=BC\)]
\(\therefore C=45 ^o\)
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