Question

Find part "b". https://media.glynlyon.com/g_geo_2013/5/01.gif Math please help

Answer 1

i says the answer is something like this blank=4blank/blank

Answer 2

\[\frac{ x }{ 15 }=\sin 30=\frac{ 1 }{ 2 },x=\frac{ 15 }{ 2 },\]

Answer 3

im confused >.<

Answer 4

how?

Answer 5

b=4blank/blank but there was no 4

Answer 6

this https://media.glynlyon.com/g_geo_2013/5/01.gif

Answer 7

wait i have not completed the question.
first find x as i have found.
then y from smaller two triangles
then equate y to find b

Answer 8

you may also find z by pythagoras theorem
sides are 15 and 15/2

Answer 9

find z, i will see your work.

Answer 10

15^2+15/2^2 = 1125/4 or 281.25

Answer 11

right?

Answer 12

\[z=\sqrt{\left( 15 \right)^{2}-\left( \frac{ 15 }{ 2 } \right)^{2}}=15\sqrt{1-\frac{ 1 }{4 }}=\frac{ 15\sqrt{3} }{2}\]

Answer 13

\[\frac{ b }{z }=\cos 30=\frac{ 1 }{ 2 },b=\frac{ z }{ 2 }=\frac{ 15\sqrt{3} }{4 }\]

Answer 14

correction
write 15/2 in place of 4 in the diagram.

Answer 15

you have to find x first.
if you have any doubt you can ask me.

Answer 16

i cant replace the 4 tho its fill in the blank on my online class

Answer 17

one more correction
\[ \cos 30=\frac{ \sqrt{3} }{2 }\]

Answer 18

\[b=\frac{ 15\sqrt{3} }{ 2 }*\frac{ \sqrt{3} }{ 2 }=\frac{ 45 }{4 }\]

Answer 19

:D

Answer 20

you can solve this question by many ways
e.g., similarity of triangles.

Answer 21

thank you so much !

Answer 22

yw