Notice that you will get a slightly different answer if you evaluate and round tan26° in the second step of the solution.
«math xmlns=¨http://www.w3.org/1998/Math/MathML¨»«mtable columnspacing=¨0px¨ columnalign=¨right center left¨»«mtr»«mtd»«mtext mathcolor=¨#FF0000¨»tan«/mtext»«mo mathcolor=¨#FF0000¨»§#160;«/mo»«mn mathcolor=¨#FF0000¨»26«/mn»«mo mathcolor=¨#FF0000¨»§#176;«/mo»«/mtd»«mtd»«mo mathcolor=¨#FF0000¨»=«/mo»«/mtd»«mtd»«mfrac mathcolor=¨#FF0000¨»«mrow»«mtext»length§#160;opposite«/mtext»«mo»§#160;«/mo»«mn»26«/mn»«mo»§#176;«/mo»«/mrow»«mrow»«mtext»length§#160;adjacent§#160;to«/mtext»«mo»§#160;«/mo»«mn»26«/mn»«mo»§#176;«/mo»«/mrow»«/mfrac»«/mtd»«/mtr»«mtr»«mtd»«mn mathcolor=¨#FF0000¨»0«/mn»«mo mathcolor=¨#FF0000¨».«/mo»«mn mathcolor=¨#FF0000¨»49«/mn»«/mtd»«mtd»«mo mathcolor=¨#FF0000¨»§#8773;«/mo»«/mtd»«mtd»«mfrac mathcolor=¨#FF0000¨»«mi»p«/mi»«mn»35«/mn»«/mfrac»«/mtd»«/mtr»«mtr»«mtd»«mn mathcolor=¨#FF0000¨»35«/mn»«mo mathcolor=¨#FF0000¨»§#183;«/mo»«mn mathcolor=¨#FF0000¨»0«/mn»«mo mathcolor=¨#FF0000¨».«/mo»«mn mathcolor=¨#FF0000¨»49«/mn»«/mtd»«mtd»«mo mathcolor=¨#FF0000¨»§#8773;«/mo»«/mtd»«mtd»«mfrac mathcolor=¨#FF0000¨»«mi»p«/mi»«menclose notation=¨updiagonalstrike¨»«mn»35«/mn»«/menclose»«/mfrac»«mo mathcolor=¨#FF0000¨»§#183;«/mo»«menclose mathcolor=¨#FF0000¨ notation=¨updiagonalstrike¨»«mn»35«/mn»«/menclose»«/mtd»«/mtr»«mtr»«mtd»«mn mathcolor=¨#FF0000¨»17«/mn»«mo mathcolor=¨#FF0000¨».«/mo»«mn mathcolor=¨#FF0000¨»15«/mn»«/mtd»«mtd»«mo mathcolor=¨#FF0000¨»§#8773;«/mo»«/mtd»«mtd»«mi mathcolor=¨#FF0000¨»p«/mi»«/mtd»«/mtr»«mtr»«mtd/»«mtd/»«mtd/»«/mtr»«/mtable»«/math»
It is preferable to leave any rounding until the very last step in a solution.
