Someone Plz Help Me!! IDK How To Do This. Will Mark Brainliest 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

1. the wheeling bridge in west virginia is about 307 meters long. if you walk with a stride of about meter, about how many steps would it take you to cross this suspension bridge?

Ascientist wants to use a model to present the results of his detailed scientific investigation. why would a model be useful? a )because the model makes the concepts easier to understand b) because the model is easy to put together and to use c) because the model prevents other scientists from asking questions d) because the model requires the audience to pay full attention to it i don't know what to choose because between a and d a is much more likely than d because it only wants to get the attention of the audience. i'm confuse.

Which of the following best describes the delian problem?