document.write( "Question 1199541: How many solutions of the trigonometric equation cos 𝑥 = 0.7 are in the interval [−𝜋; 2𝜋] \n" ); document.write( "
Algebra.Com's Answer #833475 by greenestamps(13203)\"\" \"About 
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\n" ); document.write( "cos(x) takes on all its values (between -1 and 1) on the interval from 0 to pi. It similarly takes on all its values on any interval from (n)pi to (n+1)pi.

\n" ); document.write( "The given interval consists exactly of three of those intervals, so the equation is satisfied 3 times on the given interval.

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