Question

can you guys help me please!!!!!!! i need help on #57, 58, and 59. Problems are on attachment

Answer 1

i cant see the picture :D

Answer 2

oops its upside down! haha :p umm hold on

Answer 3

can you see it now?

Answer 4

oh sorry..
No.57) is that trigonometry problems?

Answer 5

no its geometry

Answer 6

but its question find the measure not the length of e and f, i think not easy to solve it

Answer 7

This is the first time i see a problem like this. I don't know how to even begin solving this problem

Answer 8

i want try to solve the problems of No.58) and 59)

58). solve here, i means it find of all not known, like the measure of B, the length of AC, AB, the last find area of ABC
the first, find m(B) = (180 - (30+90)) = 180 - 120 = 60 degrees
next we find the length of AC and AB, we use :
the proportion of BC, AB, and AC is 1 : 2 : sqrt(3)
So, AB=2xBC
AB = 2x4=8.
AC=BC x sqrt(3)
AC = 4 x sqrt(3)
The last, the area of ABC = (4 x 4 x sqrt(3))/2= (16 x sqrt(3))/2 = 8xsqrt(3)


59). i think, this problem like on 57). we use trigonometry's concept (did u studied it?)
for to find the length and width of rectangle, we use formula : (look at the picture)

Answer 9

(use ur calculator to find value of cos35 and sin 35 degrees)