Cofunctions (Sine Cosine) Guided Notes with Video Lesson and Practice Worksheet

What others say

"I used this source to help guide my lesson planning and as a question bank for a variety of basic cofunction practice problems."

Ashley S.

"This was perfect for my class. I love having a video to share with students who may be absent on the day I teach a particular lesson. I"

Talitha B.

Description

This no-prep Cofunctions lesson is a great way to teach & introduce the relationship between the sine and cosine of complementary angles within right triangles. This resource includes guided notes with an accompanying video, plus an extra practice worksheet so your students can get further practice with cofunctions, whether you assign it in class or for homework!

This Cofunctions Notes & Practice four page packet includes:

Simple note section
8 sample questions
Includes multiple choice practice
Corresponding YouTube video that works through the notes and sample questions
Additional practice worksheet - great for homework!
Extension problems - great for differentiating for an honors class!
Handwritten answer key

These notes are perfect to introduce a new topic and ensure students get sufficient practice. The practice problems can also best be used for homework, while the extension problems are great for early finishers or an advanced class.

The best part? The two note pages come with a corresponding YouTube video, perfect for a flipped classroom or absent students! You can watch the YouTube video that covers the notes and sample questions HERE! (This resource also includes an additional practice page + extension problems that are not part of the video.)

⭐️ Helpful Links ⭐️

▪️Coordinating Activity: Cofunctions - Color by Number

▪️Upgrade & Save 25%: Trigonometry Unit Notes & Worksheet Bundle

▪️Upgrade BIG & Save 45%: Full Year of Geometry Notes & Activities Bundle

Having difficulty with a file?

Submit a help ticket, or ask a question on the Q& A tab before leaving feedback.

___________________________________

Permission to copy for single classroom use only.

Please purchase additional licenses if you intend to share this product.

Report this resource to TPT

Reported resources will be reviewed by our team. Report this resource to let us know if this resource violates TPT's content guidelines.

Cofunctions (Sine Cosine) Guided Notes with Video Lesson and Practice Worksheet

Name: Cofunctions (Sine Cosine) Guided Notes with Video Lesson and Practice Worksheet
Brand: Acute Geometry Class
SKU: 5832973
Price: 3.00 USD
Availability: InStock
Rating: 5 (4 reviews)

Rated 5 out of 5, based on 4 reviews

5.0 (4 ratings)

Acute Geometry Class

1.3k Followers

$3.00

Highlights

Digital downloads

PDF

Grades

10th

Subjects

Geometry, Math

Standards

CCSSHSG-SRT.C.7

What others say

"I used this source to help guide my lesson planning and as a question bank for a variety of basic cofunction practice problems."

Ashley S.

"This was perfect for my class. I love having a video to share with students who may be absent on the day I teach a particular lesson. I"

Talitha B.

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Description

This Cofunctions Notes & Practice four page packet includes:

Simple note section
8 sample questions
Includes multiple choice practice
Corresponding YouTube video that works through the notes and sample questions
Additional practice worksheet - great for homework!
Extension problems - great for differentiating for an honors class!
Handwritten answer key

⭐️ Helpful Links ⭐️

▪️Coordinating Activity: Cofunctions - Color by Number

▪️Upgrade & Save 25%: Trigonometry Unit Notes & Worksheet Bundle

▪️Upgrade BIG & Save 45%: Full Year of Geometry Notes & Activities Bundle

Having difficulty with a file?

Submit a help ticket, or ask a question on the Q& A tab before leaving feedback.

___________________________________

Permission to copy for single classroom use only.

Please purchase additional licenses if you intend to share this product.

Report this resource to TPT

Reported resources will be reviewed by our team. Report this resource to let us know if this resource violates TPT's content guidelines.

5.0

Rated 5 out of 5, based on 4 reviews

4
ratings

All verified TPT purchases

Geometry Teacher

Rated 5 out of 5

February 14, 2026

Met expectations

Great value

Standards-aligned

I used this source to help guide my lesson planning and as a question bank for a variety of basic cofunction practice problems.

Ashley S.

31 reviews

Grades taught: 9th, 10th

Love the video component

Rated 5 out of 5

January 17, 2026

Met expectations

Great value

Standards-aligned

This was perfect for my class. I love having a video to share with students who may be absent on the day I teach a particular lesson. I

Talitha B.

191 reviews • Tennessee

Grades taught: 9th, 10th

Rated 5 out of 5

March 5, 2024

The guided notes were very helpful in managing my time effectively. They were well-organized and easy to follow, which made the note-taking process much simpler.

Alecia Y.

145 reviews

Grades taught: 10th

Rated 5 out of 5

September 26, 2023

Love the explanation of this concept. Kids enjoy visuals

Corrie K.

343 reviews

Grades taught: 10th

Questions & Answers

Standards

to see state-specific standards (only available in the US).

CCSSHSG-SRT.C.7

Explain and use the relationship between the sine and cosine of complementary angles.