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

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


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, determine whether the following problem or activity can enable students to understand the concepts or skills in the provided description.

shot_info: fl_problem_001894_pos_0

HS_0
standard_description: Recognize that in a multi-digit number, a digit in one place represents 10 times as much as it represents in the place to its right and 1/10 of what it represents in the place to its left.
problem_activity: Problem 1
Find each quotient. Be prepared to explain your reasoning.
8 ÷ 2 = _________
0.8 ÷ 2 = _________
0.08 ÷ 2 = _________
What is the relationship between the quotients in Parts (i) and (ii) above? Between Parts (i) and (iii)? .
Problem 2
Compute.
0.06 ÷ 3 = ___________
0.24 ÷ 4 = ___________
Problem 3
Estimate each of the following quotients.
7.92 ÷ 4
3.6 ÷ 5
0.52 ÷ 6


aligns: no