sinx=-1/4 find x without a calculator. confused because cant use special triangles 0_0

Question

sinx=-1/4   find x without a calculator. confused because cant use special triangles 0_0

amistre64 · Answer

are you allowed to use rock paper and scissors?

anonymous · Answer

haha what? =/

amistre64 · Answer

what are you "allowed" to use

anonymous · Answer

well the unit circle and special triangles i guess. this is a question i found online though.. so it does require a calculator?

amistre64 · Answer

most trig function require a table or calculator simply becasue they tend to be irrational values

anonymous · Answer

allright, thanks :)

amistre64 · Answer

if you can thin of 2 angles that add or subtract or otherside to get 1/4 it might be easier to figure tho

amistre64 · Answer

or otherwise ....

anonymous · Answer

I think you can graph sine and see where x=-1/4

amistre64 · Answer

compass and ruler :)

amistre64 · Answer

|dw:1332452012303:dw|

anonymous · Answer

during tests, you only get the exam and your pencil. so im assuming they wont ask this type of question

amistre64 · Answer

hopefully note, or else you  better get real good at finding roots of infinitely long polynomials