Question

Please Help ???
Solve the following triangle.
A=28 degrees
B=20 degrees
c= 17 m
FIND Angle C

Answer 1

what is 17m?

Answer 2

side C

Answer 3

c= (180-(a+b))
the angle c = 180-(20+28) @hamza123

Answer 4

132

Answer 5

what about side a

Answer 6

you can find a using the sin rule

a/sinA = c/sinC

Answer 7

a/sin28=17m/sin132

Answer 8

@MrNood i was putt my draw but u are fast cool

Answer 9

so what do i do next

Answer 10

you can solve all the unknowns from the sin rule

a/sin28=17m/sin132

put in the values for sin 28 and sin 132 and oyu can get a from your equation

Answer 11

17m I assume is 17 metres - so you have the only unknown is a

Answer 12

i cant find the answer because i dont know how to set it up

Answer 13

you wrote the equation:

a/sin28=17m/sin132

multiply both sides by sin 28

Answer 14

im still confused

Answer 15

so multiply 17m/sin132 * sin 28

Answer 16

86.75 is the answer?

Answer 17

is this correct

Answer 18

17 *sin132*sin28

Answer 19

should the answer be 0.2445

Answer 20

what is there no solution??? pls answer

Answer 21

you have written the correct equation - you have done all the 'triangle bits'

a/sin28=17m/sin132

you simply have to solve your equation for a

\[\frac{ a }{\sin28 } = \frac{17 }{ \sin132 }\]

solve it like any equation - you should be able to do these equations if you have already reached the trigonometry stage in maths

Answer 22

hmmm

Answer 23

I gave the hint above:

multiply both sides by sin 28

Answer 24

for, if that's that, then you can simply use the internal angles sum

Answer 25

sin 132a=17sin28 then solve

Answer 26

@jdoe0001
that has already been done - the angle is 132

the sin rule is all that is needed

but she has even done THAT

all she needs is to solve the equation for a

Answer 27

ohh ahemm... alrite =)

Answer 28

the posting only says, find C

Answer 29

no a

Answer 30

so 132=17sin128

Answer 31

just multiply the equation YOU wrote on both sides by sin 28

take it steady and be methodical

(your last post has missed out the a)

Answer 32

so 132 *sin 28

Answer 33

\[\frac{ a }{ \sin 28} = \frac{ 17 }{ \sin 132 }\]

multiply both sides by sin 28

BE METHODICAL _ DONT GUESS

Answer 34

17sin28/sin132 sin28

Answer 35

no

I'm sorry - you are studying trigonometry - this is way beyond doing simple crossmultiplying

look at the equation - wite *sin 28 on EACH SIDE then simplify

Answer 36

for both 17 and sin 132

Answer 37

you have an equation with a in it as the only unknown

to solve it you want an equation that reads a=????

to get there take the equation I werote in my last post and write "times sin 28" on EACH SIDE

Answer 38

as an example

a/2 = 17/3

multiply both sides by 2

a*2/2 = 17*2/3

the left side cancels so

a = 34/3 = 11.33333

do the same with sin 28 in your equation