Question 993436
Hi there,
cscē∅- cosē∅cscē∅= 1 
[cscē∅ = 1/sin^2∅]
.......
cscē∅- cosē∅cscē∅= 1
1/sin^2∅- cosē∅ 1/sin^2∅ = 1
1 - cosē∅/sin^2∅ = 1
[1 - cosē∅ = sin^2∅]
sin^2∅/sin^2∅ = 1
Hope this helps :-)