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


Concept/skill: 
Prove the addition and subtraction formulas for sine, cosine, and tangent and use them to solve problems.

Answer: 
Yes. An initial step when solving for x in this problem requires the use of the addition formula for cosine on the left side of the equation.

Now, does the following problem or activity enable students to learn the full intent of the following concept or skill?

shot_info: fl_problem_001894_pos_0

HS_0
standard_description: Find the greatest common factor of two whole numbers less than or equal to 100 and the least common multiple of two whole numbers less than or equal to 12. Use the distributive property to express a sum of two whole numbers 1–100 with a common factor as a multiple of a sum of two whole numbers with no common factor. For example, express 36 + 8 as 4 (9 + 2).
problem_activity: Task
Solve each problem using pictures and using a number sentence involving division.
How many fives are in 15?
How many halves are in 3?
How many sixths are in 4?
How many two-thirds are in 2?
How many three-fourths are in 2?
How many $\frac16$’s are in $\frac13$?
How many $\frac16$’s are in $\frac23$?
How many $\frac14$’s are in $\frac23$?
How many $\frac{5}{12}$’s are in $\frac12$?


aligns: no