This is my next trigonometry question i am needed on- i just want to be sure i've got it right, or if not, then the steps i need to take to get it right. you.

so. hmm which is it? the +/- ?   well, neverminding for a second, the value of tangent, just looking at the sign, the tangent is positive,

tangent = opposite/adjacent.... so that only happens, when both are the same sign, + or - both

now, we know the sine is -1/5.. if the sine is negative, the cosine also has t to be negative, so we'd use the -2√(6) = a

thus     

Basic algebra equation. first set up your equation: divide out 9.and now you are left with 2x + 4 = 8.