Tunjukkan bahwa: Csc 30° + csc 60° + csc 90° / cos 0° + sec 30° + sec 60° = 1

csec 30 + cosec 60 + cosec 90 / cos 0 + sec 30 + sec 60 
= 1/sin 30 + 1/ sin 60 + 1/sin 90 / cos 0 + 1/cos 30 + 1/cos 60
= 1/1/2 + 1/1/2akar3 + 1/1 / 1 + 1/1/2akar3 +1/1/2 = 1