Darw a circle with radius=1 and center at (0,0) then on sin axis go up as much as squrt(3)/2, draw a horizontal line to intersect circle at two points...now draw tan axis and check which of the two points on circle qualifies for tan>0
I have to do this packet for an AP class I'm taking, and my teacher didn't give me anything to work with. I'm desperate.
sin(theta)= (square root)3/2 and tan(theta) > 0 ; Find cos(theta).
Darw a circle with radius=1 and center at (0,0) then on sin axis go up as much as squrt(3)/2, draw a horizontal line to intersect circle at two points...now draw tan axis and check which of the two points on circle qualifies for tan>0
Hello, MaddyV!
is positive: . is in Quadrant 1 or Quadrant 2.
is positive: . is in Quardrant 1 or Quadrant 3.
. . Hence, is in Quadrant 1.
is in a right triangle with: .
Pythagorus tell us that: .
Therefore: .
It was actually recommended that I skip Pre-Calculus and go straight to AP Calculus AB. I was given a summer packet with these problems specifically so I could learn how to do these things.