linaa1529 linaa1529
  • 09-02-2014
  • Mathematics
Answered

how do you write the cos 18° in terms of the sine.

how do you write the cos 18 in terms of the sine class=


Answer :

Аноним Аноним
  • 09-02-2014
It's sine of 90-18, that is, sine of 72 degrees.
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