In ΔABC if Sin A = 9/15 then Cosec2 A – Cot2 A =A) 1 B) -1 C)

1.	In ΔABC if Sin A = 9/15 then Cosec2 A – Cot2 A =A) 1 B) -1 C) 2 D) 3
Answer» Correct option is: A) 1 \(cosec^2 A - cot^2A = 1 \) for any value of A except those values where sin A = 0 Here, sin A = \(\frac 9{15} \neq 0\) \(\therefore\) \(cosec^2 A - cot^2A = 1 \) Correct option is: A) 1

In ΔABC if Sin A = 9/15 then Cosec2 A – Cot2 A =A) 1 B) -1 C) 2 D) 3

Answer»

Correct option is: A) 1

\(cosec^2 A - cot^2A = 1 \) for any value of A except those values where sin A = 0

Here, sin A = \(\frac 9{15} \neq 0\)

\(\therefore\) \(cosec^2 A - cot^2A = 1 \)

Correct option is: A) 1