Giving away all my acons to a person who will help me with my trigonometry work!!

I would tell you...but I haven't learnt that in school yet

I hate trigonometry

I believe the second one is Quardrent 3

1. cosx = 2cos^2(x/2) - 1

cos^2(x/2) = 6/7

cos(x/2) = sqrt(6/7)

I think the last one is quadrent 4

Quote from StrawberryChaeng

I don't have a lot rn bc I just gave them away but I will give them to you as I collect them for 2 whole weeks!!!!! (i post a lot)

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What the -

How?

2. Quadrant 2.

By first inequality cot is negative, thus tan is negative. By the second inequality cosine is negative. Thus sine is positive. Thus 2nd quadrant.

Trig was so 7 years ago for me

sohcahtoa 4 lyfe

Last 2 questions:

Quadrant II [cotangent is negative in II and IV. Tangent is (sin/cos), so if you multiple that by (cos/1), the cosines simplify, and you're left with where sin>0, or positive. II is the final answer.)

Quadrant IV [Tangent is negative in II and IV. Secant is positive in I and IV. So IV is the final answer.)

3. Quadrant 4.

sec is positive. Thus cosine is positive. tan is negative. Thus sine is negative. Thus Quadrant 4.

All you have to do is use google or calculator and try input each of the options into the questions one at a time. You will eventually come across the right answer.

Quote from StrawberryChaeng

Thank you!!!!! can you explain it so I can understand???

sure IMG_20210316_225238.jpg

idk if you were taught this chart: All Students Take Calculus

I'm still in Algebra 1 lmao sorry

Good luck, though!

Quote from StrawberryChaeng

Thank you craftycat  omnimorphism and MassiveKpopFan I am going to split my acorns between the 3 of you guys. I am going to be collecting them until Sunday! PM me if I forget!!!!!!

You're welcome, I enjoyed trig in high school.