How do you evaluate the expression sec60?

1 Answer
Jim G.
Nov 27, 2016

sec60^@=2

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

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