xanwithmyhan xanwithmyhan

07-12-2015
Mathematics

Answered

use a calculator to evaluate sec 85 degrees

Verified Answer :

07-12-2015

OK. I used my calculator to evaluate sec(85 degrees).

My calculator doesn't have a "sec" button on it.
But I remembered that

sec of an angle = 1 / (cosine of the same angle) .

So I used my calculator to find cos(85), and then I hit the
" 1/x " key, and got 11.474, which I knew to be sec(85).

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