few_shots: 
Example:
Concept/skill: 
Understand that by similarity, side ratios in right triangles are properties of the angles in the triangle, leading to definitions of trigonometric ratios for acute angles.

Problem/activity:
Find the general solution for:
$${\mathrm{cos}\left({\pi\over2}+x\right)=\mathrm{tan}{\pi\over4}}$$


Answer: 
No. This problem does not directly teach how side ratios in right triangles lead to definitions of trigonometric ratios. Instead, it involves solving a trigonometric function.

Now, assess whether the following problem or activity is 'aligned' with the given Common Core standard in Mathematics.

shot_info: fl_problem_001894_neg_0

HS_0
standard_description: Use inverse functions to solve trigonometric equations that arise in modeling contexts; evaluate the solutions using technology, and interpret them in terms of the context.
problem_activity: The estimated size for a population of rabbits and a population of coyotes in a desert habitat are shown in the table. The estimated population sizes were recorded as a part of a long-term study related to the effect of commercial development on native animal species.
{"table": [{"_attributes": {"class": ["table", "table-bordered"], "style": "width:100%"}, "tbody": [{"tr": [{"td": [{"em": [{"_value": "n"}], "_values": ["Years since initial count (", ")"]}, {"_value": "0"}, {"_value": "3"}, {"_value": "6"}, {"_value": "9"}, {"_value": "12"}, {"_value": "15"}, {"_value": "18"}, {"_value": "21"}, {"_value": "24"}]}, {"td": [{"em": [{"_value": "r"}], "_values": ["Estimated number of rabbits (", ")"]}, {"_value": "14,989"}, {"_value": "10,055"}, {"_value": "5,002"}, {"_value": "10,033"}, {"_value": "15,002"}, {"_value": "10,204"}, {"_value": "4,999"}, {"_value": "10,002"}, {"_value": "14,985"}]}, {"td": [{"em": [{"_value": "c"}], "_values": ["Estimated number of coyotes (", ")"]}, {"_value": "1,995"}, {"_value": "2,201"}, {"_value": "2,003"}, {"_value": "1,795"}, {"_value": "1,999"}, {"_value": "2,208"}, {"_value": "2,010"}, {"_value": "1,804"}, {"_value": "2,001"}]}]}]}]}
Below are sketches of each graph, with a curve fitted to the data.
[IMG]
[IMG]
Write the function for each situation and then calculate the two different numbers of years where the population estimate is about 13,000 for rabbits and 2,100 for coyotes.


aligns: yes