I have a question, can someone answer me. Metal awarded.

Question

anonymous · Answer

I have a problem and it ask for tan2theta, and theta is in the 1st quad, but when I work out the problem I get a negative result. Do that number automatically turns positive?

anonymous · Answer

does*

anonymous · Answer

do you know anything about tan, sin and cos?

anonymous · Answer

$$\tan^2 \theta$$
$$0^\circ<\theta<90^\circ$$

whats the question?

anonymous · Answer

or is it $$\tan (2\theta)$$?

anonymous · Answer

$$\tan2\Theta$$

anonymous · Answer

what is the original question?

anonymous · Answer

Given: sin =4/5  and cos x =-5/13 ; evaluate the following expression. 

(Theta: Quadrant I, x : Quadrant II.)

tan 2 Theta
a.) 8/3
b.) 24/7
c.) -24/7

anonymous · Answer

my outcome is -24/7 but theta is in the first quad and tan is positive in the first quad

mertsj · Answer

If theta is greater than 45 and in the first quadrant, then 2 theta is in the second quadrant where the tangent is negative.

anonymous · Answer

yes theta is in the first quadrant, but you're not finding tan(theta)

you're finding tan(2*theta)

and its possible for 2*theta to be in the second quadrant

as mertsj just stated

anonymous · Answer

So my result stays at -24/5

anonymous · Answer

*-24/7 sorry

anonymous · Answer

assuming you didnt make any mistakes in your calculation, then that would be the answer

note- i didnt actually do the problem

anonymous · Answer

okay Thank You both, now I can start my quiz with no problem. fingers crossed!