2 previous attempts to solve.
Vector A is 87 Units long, at 26 degrees above the +X axis. Vector B is 81 Units long, and aims at 84 degrees above the +X axis. Find the length in "Units" of the resultant.

You entered 141 
Find X and Y components of each vector...
Ax = 87 cos26 = 78.213
Ay=87 sin26 = 38.019
Bx = 81 cos84 = 8.424
By = 81 sin84 = 80.514
Add together the X's
78.213 + 8.424 = 86.637
Add together the Y's
38.019 + 80.514 = 118.533
Then use the pythagorean theorem to find the hypotenuse...
the square root of (86.637 ^2 + 118.533 ^2 ) = 146.819

Previous attempts for user demo
Date Log Entry Remark From
Fri Jul 9 21:47:28 1999 147 - pm613-24.dialip.mich.net
Fri Jul 9 21:47:52 1999 141 - pm613-24.dialip.mich.net
Homework: Resultant Vector