jane1820
#1 Chase Atlantic Lover
what do u mean by ‘value’? Help im lostyou missed a step; the answer you got is correct, but it's not what you're solving for. you got the 2nd unknown angle in the triangle, but not the value of theta itself. from here you need to solve for theta using missing angles in a triangle w/ 2 known angles (180 - 63 - 42 = 75). basically you weren't wrong in the answer for the other unknown angle (i've dubbed angle 'a' in my solution), but forgot to solve for theta afterwards.
isnt when u say (for example) a=3 in an equation doesnt that mean the value of a is 3?