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Title: Trigonometry function( sine, cosine, tangent)

Grade: 10-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	Choice.A	The expression is incorrect as it results in 0, not 2, rendering it inaccurate	2
9	Choice.B	This is correct because the value of the expression is indeed 0	0
10	Choice.C	This is not correct because the expression evaluates to 0, not - 2	-2
11	Choice.D	The statement is inaccurate; the expression yields 0, not 3, rendering it incorrect	3
12	Answer	Option	B
13	Sumup	Can you summarize what you’ve understood in the above steps?

Step

Type

Explanation

Answer

Problem

Determine value of \$3cos((2π) /4)\$.

Step

The given value is

\$3cos((2π) /4)\$

Step

Let’s simplify the expression

\$3cos(π /2)\$

Hint

The cosine of \$π/2\$ is 0

Step

Therefore, the value of the expression is

\$3 times 0\$

Step

After simplification

Step

So, the value of \$3cos⁡((2π)/4)\$ is 0.

Choice.A

The expression is incorrect as it results in 0, not 2, rendering it inaccurate

Choice.B

This is correct because the value of the expression is indeed 0

Choice.C

This is not correct because the expression evaluates to 0, not - 2

-2

Choice.D

The statement is inaccurate; the expression yields 0, not 3, rendering it incorrect

Answer

Option

Sumup

Can you summarize what you’ve understood in the above steps?