Someone Plz Help Me!! IDK How To Do This. Will Mark Brainliest and give thanks Just plz help me. Prove each Trigonometric Identity

1. cot x sec⁴x = cot x +2 tan x + tan³x

2. (sin x)(tan x cos x - cot x cos x)= 1 - 2 cos²x

3. 1 + sec²x sin²x=sec²x

4. sin x/1 - cos x + sin x/ 1 + cos x = 2 csc x

5. - tan²x + sec²x = 1

Lindsay used two points, (x,y; ) and (+2.82), to find the equation of the line, y = mx + b, that passes through the points. y2-y, first, she used the definition of slope and determined that the value of mis x, - . given this information, which expression must represent the value of b?

Apiling for a high-rise building is pushed by two bulldozers at exactly the same time. one bulldozer exerts a force of 1250 pounds in a westerly direction. the other bulldozer pushes the piling with a force of 2650 pounds in a northerly direction. what is the direction of the resulting force upon the piling, to the nearest degree? a. 65 n of w b. 25 n of w c. 45 n of w d. 35 n of w

Alcoa was $10.02 a share yesterday. today it is at $9.75 a share. if you own 50 shares, did ou have capital gain or loss ? how much of a gain or loss did you have ? express the capital gain/loss as a percent of the original price