a vector space is a set that's closed under a finite/determined vector addition and scalar multiplication. Basically, scalars are maembers (they can be numbers or variables for exg) in a field called (for exg) F, where in that case, a vector space called (for exg) S would be over (so larger & including) the field we called F.
Answer:
2x+15=145........ vertically Opposite
2x=145-15
2x=130
x=130/2
65
x=65
Well... with the information you are given you just have to assume they are congruent triangles. The first picture looks like a right triangle, but the angle is 100 not 90... so it wouldn't actually look like that.
So for the missing angle all you do is 180= 100+ 55 + x
x=25
Then just match up the angles with the other triangle, they would be the same. K with F, J with G, and so on
Do u have a picture of the problem??
So using trigo ;
cos D =base/hypo
cosD =23.5/33.8 = 0.695
so and D = 45.97°
thus angle F = 180-(90+45.97) =44.03°
so your answers are 45.97° and 44.03° or you can say 45° and 45°....approx !!
