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Grade 9Trigonometry

Root over [{ 1 + sin x } ÷ { 1 − sin x}] = − csc ∂ − cot ∂ , then ∂ is in,
  1. Q1 or Q2 ,​ 2. Q1 or Q3 , 3. Q3 or Q4 , 4. Q1 or Q4

Question image for Root over [{ 1 + sin x } ÷ { 1 − sin x}] = − csc
Profile image of Gannavarapu Rishik
8 Years agoGrade 9
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1 Answer

Profile image of Arun
8 Years ago
Dear student
 
LHS is always positive.
Now RHS =
= - ( cosec x + cot x)
Hence
 
(Cosec x + cot x ) should be negative
 
Then x definitely should be in Quadrant 4.
Now one case can be quad 3.
 
 
Regards
Arun (askIITians forum expert)