Question

How do i get the secant on a calculator without having a sintax error?

Answer 1

get new batteries :)

Answer 2

go back to basics

sec x = 1/cos x

Answer 3

Try this: suppose you want to find the secant of 30 degrees.
1. Set your calculator to DEGREE mode.
2. Press the appropriate key for cos(
3. type in 30, followed by a right parenthesis: you should see cos(30)
4. enter
This result is cos 30 deg.

To obtain sec 30 deg, use either the

Answer 4

key, or find the reciprocal of cos 30 by typing this in: 1/cos(30) ENTER.

Answer 5

this assumes you have a TI-83 or -84 calculator.

Answer 6

but 1/cos(90) still gives me a syntax error ....

Answer 7

cos 90 deg is zero, so the reciprocal of that is undefined.
Thus, the secant of 90 deg is also undefined.