How do you evaluate the expression #sec60#?
1 Answer
Nov 27, 2016
Explanation:
#color(orange)"Reminder " color(red)(bar(ul(|color(white)(2/2)color(black)(sectheta=1/costheta)color(white)(2/2)|)))#
#color(white)(xxxxxxxx)("undefined for" costheta=0)#
#rArrsec60^@=1/(cos60^@)=1/(1/2)=2#
