What happens as θ approaches π/2 from the left? (a) set θ = 1.48 and notice how much larger the partial sums are than when θ = π/3. what is the value of s200? s200 = what is the value of the infinite sum? ∞lii = 1 = (b) increase θ to 1.55. what is the value of the infinite sum? ∞lii = 1 =

second option

step-by-step explanation:

the measures of a triangle equal 180. use that to find x.

2x+3x+4x=180

9x=180

9x/9=180/9

x=20

now you know x, you know angle a is 40°, angle b is 60°, angle c is 80°.

because angle a is 40°, the first option doesn't work.

because angle b is 60°, the second option does work.

when you add angle a and b, you get 100°. complementary means it equals 90°, so the third option doesn't work.

when you add angle a and c, you get 120°, which is not 100.

it's d

step-by-step explanation:

the answer is "add 2y and y"

step-by-step explanation:

you need to collect the like terms first.