🎴 Flashcard Mode
Trigonometry - Class XI
Card1 / 48
Mastered0
Review0
QuestionClick to flip
The value of ${ cosec }^{ 2 }{ 51 }^{ 0 }-{ cot }^{ 2 }{ 51 }^{ 0 }$ is
AnswerClick to flip back
A
1
💡 Explanation:
We know,
$1 + \cot^2\theta = cosec^2 \theta$
$\therefore cosec^2\theta - \cot^2 \theta = 1$
Thus, $cosec^2 51^o - \cot^251^o = 1$
Hence, option a is correct.