If $cos θ=\frac{9}{13}$, then what is the value of cosecθ ?
Answer & explanation
Correct answer: option 2
cosθ = \(\frac{9}{13}\)
{ using, cosθ = \(\frac{B}{H}\) }
By using pythagoras theorem,
P² + B² = H²
P² + 9² = 13²
P² = 169 - 81 = 88
P = 4 \(\sqrt {22 }\)
Now,
cosec θ = \(\frac{13}{2√22}\)
= \(\frac{13√22}{44}\)