Question

Verify my answers please; Trigonometric equations

Answer 1

Find tan(theta) if sec(theta) = sqrt26/5 and sin(theta) < 0.

My answer: -5

Answer 2

Find cos(theta) if sin(theta) = -12/13 and tan(theta) > 0.

My answer: -5/12

Answer 3

Find an exact value of sin 105(degrees).

My answer: \[(\sqrt{6}+\sqrt{2})/4\]

Answer 4

That's it =)

Answer 5

1 ) ) yes

Answer 6

I got -1/5 :/

Answer 7

Oh, I see =0 @Loser66 is that what you got too?

Answer 8

let Luigi gives out his logic

Answer 9

Ok, I'm just gonna write out my steps for the first one.

Answer 10

the second one, i got -5/13, not 12