Question

csc(cos^-1 7/25)

how do i find this without a calculator?

Answer 1

\[cosec(\cos^{-1} \frac{ 7 }{ 25 } )\]
Assume:
\[\ \cos^{-1} 7/25 = \theta \]
\[\rightarrow \theta=74\]
Now,
\[cosec\theta =1.040582726326743\]