Question

Find sin θ if cot θ = - 2 and cos θ < 0.
Do I use the reciprocal identity cot = 1/tan θ?
Or do I use the quotient identity cot θ = cosθ/sinθ?

Answer 1

reciprocal

Answer 2

hi

Answer 3

hello

Answer 4

hi

Answer 5

Hi. Can you help?

Answer 6

no

Answer 7

need help

Answer 8

Would you not clutter other people's question with your own? It's very annoying.

Answer 9

I hate my little brother he went on my computer and talk to people about nasty stuff yesterday

Answer 10

ok

Answer 11

draw a diagram

Answer 12

now use pythagoras to find measure of the hypotenuse .

Answer 13

\[\sqrt{5}\]

Answer 14

right so sin theta = ?

Answer 15

\[\frac{ 1 }{ \sqrt{5} }\]

Answer 16

yep

Answer 17

How do I then rationalize the denominator?

Answer 18

oh ok
multiply topand bottom by sqrt5

Answer 19

Okay, awesome. Thank bud

Answer 20

yw