Question

can someone check my answers?

Answer 1

i don't see any answers

Answer 2

Which is the radian measure of an angle whose tangent is -0.25?
-1.33
0.24
2.9<-----my answer
4.95

Answer 3

Yes, that's correct.

Answer 4

What values for \[\theta(0\le \theta \le2\pi)\] satisfy the equation?
\[2\sin \theta \cos \theta + \cos \theta = 0\]
Answers:
\[\frac{ \pi }{ 2 }, \frac{ 3\pi }{ 4 }, \frac{ 3\pi }{ 2 }, \frac{ 7\pi }{ 4 }\]
pi/2, 7pi/6, 3pi/2, 11pi/6 <------my answer
pi/2, 3pi/4, 5pi/4, 7pi/4
0, pi/2, pi, 3pi/2

Answer 5

@whpalmer4

Answer 6

@reemii

Answer 7

yes, correct. ("<---- my answer")

Answer 8

do you think you could check some others?

Answer 9

some, sure

Answer 10

For a standard-position angle determined by the point (x,y) what are the values of the trigonmetric functions? for the point (9,12), find csc theta and sec theta. I got csc theta = 15/12
sec theta = 15/9

Answer 11

csc theta = 1/(sin(theta)) right? so, csc theta = 1/(12/15) = 15/12.
ok! the other fine too.

Answer 12

find the height of the triangle. i got 3.4

Answer 13

yes

Answer 14

i got 67,6 degrees