Calcular el valor de 765° + tg 1117° + sec 1380° - csec 45°?

Ayudennnn Calcular : E = Sec 40° + Sec 80° + Sec 100º ° + Sec 120° + Sec 140°?

Sec40 = 0. 64278 sec80 = 0. 98480 sec100 = 0. 98480 sec120 = 0. 86602 sec140 = 0. 64278 ahora sumas todo eso y te da = 4. 12121.