just a couple problems i need some help with.
1. Find the measure of the angle in radians and degrees.
2. Find the six trigonometric values of theta= cos^-1 (3/7). Give exact answers. I remember doing this during the school year but it's been a long summer and i've competely lost touch with this topic unfortunately
3. Solve for x: e^-0.2x = 4
right, so i took what u said and got 0.2xlne = ln4
i feel like this is wrong but i divide ln4 by ln of e in my calculator. it shows as ln(e^( . so i'm assuming the is being raised to the first power right? I got 1.386294361. Then divide by 0.2 on each side and my final answer was x=6.931471806. Just doesn't sound right to me for some reason.
Gotcha, it's starting to come back to me now from precalc last year. Just another quick question, from the six trig functions questions, i thoguht about it for a bit and cos^-1 = (3/7) is equivalent to secant=3/7 right? Meaning cosine would be 7/3. I draw my triangle, and solve for the last side by using pythagorean theorem... i think