If cos theta = -sqrt of 3/2 and pi/2
sin theta = -1/2; tan theta = sqrt of 3/3
sin theta = -1/2; tan theta = -sqrt of 3/3
sin theta = 1/2; tan theta = -sqrt of 3/3
sin theta = 1/2; tan theta = sqrt of 3/3

0.02

step-by-step explanation:

time of 9 192 631 770 periods of the radiation corresponding to the transition between the 2 hyperfine levels of the ground state of the caesium 133 atom at 0 k (but other seconds are sometimes used in astronomy)

cause it equals more

2 equivalent expressions to represent the area of a rectangle and the top is n-3 and the side is 2

area of the rectangle = length * width

given length = n - 3

width = 2

replace it in the area

so area of the rectangle = (n-3) *2

= 2(n-3)

one of the expression is 2(n-3)

to get another expression we distribute 2 inside the parenthesis

2(n-3) is 2n - 6

so another expression is 2n - 6

two equivalent expression are

2(n - 3)   , 2n - 6