Question

Does sin 2θ mean you are supposed to multiply the angle before calculating sin?

Answer 1

yes

Answer 2

Thank yoooouuu

Answer 3

ywwwww

Answer 4

if you're still there, i think satellite may be wrong...

Answer 5

it's true, you can multiply the angle, but i'm guessing your teacher wants you to use the trig identity \[\sin(2\theta)=2*\sin \theta * \cos \theta\]

Answer 6

the next question says tan θ/2

Answer 7

would that make sense for an identity as well?

Answer 8

yup.

Answer 9

hold on, i'll type the identity

Answer 10

I have got a range that θ is in 90 degrees < θ < 180 degrees then it says find the sign for the following....

Answer 11

sin 2θ

Answer 12

\[\frac{ \sin \theta }{ \cos \theta + 1 }\]
omg i suck at typing.

Answer 13

the above's for the tan theta/2

Answer 14

so I thought that meant 182<2θ<358

Answer 15

OK thanks man I will see what I can work out.

Answer 16

i think it would be negative for that

Answer 17

Ok I think you are right there is a section about this in the notes he posted online.