What is the scientific notation of.209

First subtract 10 from both side
y^2+6y-16=0
(y+8)(y-2)=0
-8 and 2

Hello! i hope this
since the cosine is the ratio of the adjacent side to the hypotenuse, you can see that cos 60° = ½. answer. according to the property of cofunctions (topic 3), sin 30° is equal to cos 60°. sin 30° = ½.

The right answer should be 6 but your not very specific