Question

Question #11eef

Answer 1

Using the defns of cscx and secx change them to sinx and cos x and simplify.

Explanation:

`cscx=1/sinx=>1/cscx=sinx`

likewise

`secx=1/cosx=>1/secx=cosx`

`:.sinx/(cscx)+cosx/secx`

`=sinxsinx+cosxcosx=sin^2x+cos^2x`

`=1`