Solving Trig Equations and Review
Presentation
•
Mathematics
•
9th - 12th Grade
•
Medium
Standards-aligned
Nichole Nuckols
Used 4+ times
FREE Resource
6 Slides • 4 Questions
1
1/24 Solving Trig Equations and Review
By Nichole Nuckols
Objective
In this lesson, we will:
Solve a Trig equation using squaring the Pythagorean Identities
Review 6.1 and 6.2
Opening Activity
Complete the assigned 1/24 Warm-UP on Google Classroom.
2
Example 1: Solving Trig Equation (Squaring)
You can't combine like terms and converting to sine and cosine doesn't lead to any useful mathematics. So, we will square both sides and reduce to one trig function using a Pythagorean Identity. There will be extraneous solutions.
3
Check: Plug the solutions back into the original equation.
4
Example 2: Solving Trig Equation (Squaring)
5
Multiple Choice
Solve the equation for 0≤θ<360 .
−3cosθ=−3sinθ−2cosθ
{30, 150, 210, 330}
{30, 210}
{30}
{120}
6
Multiple Choice
Solve the equation for 0≤θ<360 .
−tanθ=2tanθ+secθ−tanθ
{45, 135, 225, 315}
{225}
{225, 240}
{225, 315}
7
Recall: Only One-to-One functions are inversible.
8
Multiple Choice
Find the exact value of the expression. cot−1(cosπ)
6π
43π
55355
π
9
Multiple Choice
Find the exact value of the expression. csccos−1 127
−2π
6π
951295
95795
10
Thank you for your time and participation
No new assignments.
There will be a quiz on 1/26.
1/24 Solving Trig Equations and Review
By Nichole Nuckols
Objective
In this lesson, we will:
Solve a Trig equation using squaring the Pythagorean Identities
Review 6.1 and 6.2
Opening Activity
Complete the assigned 1/24 Warm-UP on Google Classroom.
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