Question
cot 13˚
src='https://static.ixambee.com/public/images/quesimg/Question Bank/Quantitative Aptitude/Trigonometry/83188_8502454.gif'> cot 14˚ …………………….cot 76˚ cot 77˚ = ?Solution
We know that If cotA
cotB = 1 then A & B are complementary angles it means A + B = 90˚ cot 13˚
cot 14˚
…………………….cot 76˚
cot 77˚ = (cot 13˚
cot 77˚ )
(cot 13˚
cot 77˚ )
…………………….(cot 44˚
cot 46˚ )
cot 45˚ = 1
1
………………………………………………………………..
1
1 = 1
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