Question

Which is equal to ???

Answer 1

Answer:

$csc54$°

Step-by-step explanation:

$sec36$° = $\frac{1}{cos36}$

and; $\frac{1}{cos36} = \frac{1}{sin 90 -54}$  ... (co-functions)

and $\frac{1}{sin90-54} = csc54$  .... (csc in the reciprocal of sin)