If cot θ = $\sqrt{2}+1$, then cosec θ sec θ = ?
Answer & explanation
Correct answer: option 3
cot θ = \(\frac{√2 + 1}{1}\)
{ we know, cot θ = \(\frac{B}{P}\) }
By using pythagoras theorem ,
P² + B² = H²
1² + (√2 + 1)² = H²
H² = 4 + 2√2
Now,
cosecθ . secθ
= \(\frac{H}{P}\) . \(\frac{H}{B}\)
= \(\frac{4 + 2√2}{√2 + 1}\)
= 2√2