Question

Find the value of
[sec(85°+∅)-sin(14°-∅)-cosec(5°-∅)+cos(76°+∅)]

Answer 1

I hope you understand

Answer 2

firstly convert sec into cosec and cos into sin
let theta be @
identity which we will use are

cosec (90-@) = sec@
sin(90-@) = cos@
so...

A.T.Q.
sec(85-@) - cosec(5-@) - sin(14-@) + cos (76+@)

:; cosec [90-(85+@)] - cosec (5-@) - cos [90-(14-@)] +cos (76-@)
cosec (5-@) - cosec (5-@) - cos (76+@)+ cos (76+@)

:: 0+0 =0


please make it brain list if there is any confusion then you can ask on comment
please make it brain list


thanx
:;