Lesson Example Discussion Quiz: Class Homework |
Step-4 |
Title: Trigonometry function( sine, cosine, tangent) |
Grade: 1400-a Lesson: S3-L1 |
Explanation: Hello Students, time to practice and review the steps for the problem. |
Lesson Steps
| Step | Type | Explanation | Answer |
|---|---|---|---|
1 |
Problem |
Determine value of \$3cos(2π /4)\$ |
|
2 |
Step |
The given value is |
\$3cos(2π /4)\$ |
3 |
Step |
Let’s simplify the expression |
\$3cos(π /2)\$ |
4 |
Hint |
The cosine of \$π/2\$ is 0 |
|
5 |
Step |
Therefore, the value of the expression is |
\$3 times 0\$ |
6 |
Step |
After simplification |
0 |
7 |
Step |
So, the value of \$3cos(2π/4)\$ is 0 |
|
8 |
Sumup |
Can you summarize what you’ve understood in the above steps? |
|
9 |
Choice.A |
This is not correct because the expression evaluates to 0, not 2 |
2 |
10 |
Choice.B |
This is correct because the value of the expression is indeed 0 |
0 |
11 |
Choice.C |
This is not correct because the expression evaluates to 0, not -2 |
-2 |
12 |
Choice.D |
This is not correct because the expression evaluates to 0, not 3 |
3 |
13 |
Answer |
Option |
B |
14 |
Sumup |
Can you summarize what you’ve understood in the above steps? |
|
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