1SL loney se hai kya
good trigonometry questions for iitjee
\large 1-\cot 23^{\bullet }=\frac{2}{1-\cot 22^{\bullet }}
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10 Answers
21is thread me karna kya hai ?
do v hav to guess the book or WAT?
or yeh cot vala kuch PROVE karna hai ya aisa kuch
21wat is da questn here?
JEE mein to options bhi hote hai. they also tell u wat do u hav to do wid the data given!!!
mathie kuch editing karo yaar
1tapan take it easy yaar pehle jee subjective tha tabhi ye Q aaya hoga
1\text{Consider LHS} \\ 1-cot23=1-tan67 \\ \Longrightarrow 1-tan67=1-tan(45+22) \\ \Longrightarrow 1-(\frac{tan45+tan22}{1-tan45tan22}) \\ = \frac{1-tan22-1-tan22}{1-tan22} \\ = \frac{-2tan22}{1-tan22} \\ = \frac{2tan22}{tan22-1} \\ \text{Divide numerator and denominator by tan22} \\ = \frac{2}{1-cot22}
PS:Source of this question is Titu Andreescu!
39yup right. its from 103 problems in trigonometry. the second one came in iit direct.