2+tan²A+cot²A=cosec²A*sec²A
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ርዕ ሠሀ ኗጌ ኗክ ዪቿር ዘጌቻጋሸኗክዕ ርዕ ኗክ ጎኗ ዕልሃ ዐቻ
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kailangan mo ng calculator....
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