document.write( "Question 985151: 2{[cos⁡^2 20+cos⁡^2 70)/(cosec^2 25-tan⁡^2 65)}-tan 45 +tan13 tan 23 tan30 tan 67 tan 77 \n" ); document.write( "
Algebra.Com's Answer #606369 by Alan3354(69443)\"\" \"About 
You can put this solution on YOUR website!
Idk what those squiggles are, but it looks like a calculator problem.
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