The Premium Funny I’m Sqrt 1 + Tan2 C And I Know It Math Lovers Quote Shirt brings a clever twist on a classic trigonometric identity, making it a standout choice for those who appreciate math humor. Featuring the phrase “I’m sqrt(1 + tan^2 c) and I know it,” this design playfully references the well-known mathematical expression that equals secant (sec c), blending wit with a nod to trigonometry.

Contents
About the Design and Its Mathematical Roots
This shirt centers on a mathematical expression that resonates with math enthusiasts, students, and teachers alike. The square root symbol and the trigonometric function tangent (tan) are prominently displayed in white text against a black background, creating a clean and striking visual. The phrase humorously asserts confidence in understanding the identity sqrt(1 + tan² c) = sec c, a fundamental concept in trigonometry. This makes the shirt especially appealing to those who enjoy math jokes, educational apparel, or want to add a bit of intellectual humor to their wardrobe.
Style and gift ideas
This design is well-suited for casual wear, math classes, and math-related events where a touch of humor is welcome. It connects with meme fans and people who enjoy quick, shareable humor, as well as math enthusiasts ranging from high school students to educators. Whether attending a math club meeting, a study group, or simply expressing pride in mathematical knowledge, this shirt fits the occasion. It also makes a thoughtful gift for math lovers who enjoy clever wordplay and iconic mathematical expressions.
Product details
| Product type | Shirt |
|---|---|
| Material | 100% cotton, except Sport Grey: 90% US cotton / 10% polyester; Dark Heather: 50% US cotton / 50% polyester or 35% US cotton / 65% polyester; Ash: 99% US cotton / 1% polyester. |
| Size options | S, M, L, XL, 2XL, 3XL, 4XL, 5XL |
| Care | Machine wash at max. 30ºC/86ºF with short spin cycle, inside out with like colors. Do not use bleach. Do not iron. Do not dry clean. Do not tumble dry. |
| Fit | Seamless twin needle 7/8″ collar, taped neck and shoulders, rolled forward shoulders for better fit, twin needle sleeve and bottom hems, quarter-turned to eliminate centre crease. |
| Note | Fiber content may vary by color. |

The Premium Funny I’M Sqrt 1 + Tan2 C And I Know It Math Lovers Quote t Shirt graphic is available as a classic shirt, v-neck shirt, tank top, hoodie, long sleeve shirt, sweater, washed shirt, and kids shirt — pick the style that suits you, and check the Product details above for the full size range.

You can also Explore more styles on handstee.com.
Frequently asked questions
What does the expression sqrt(1 + tan² c) mean?
The expression sqrt(1 + tan² c) is a trigonometric identity equal to sec c, representing the secant of angle c. It’s a fundamental concept in trigonometry often taught in math classes.
When is this shirt appropriate to wear?
It’s suitable for casual wear, math classes, math events, or any occasion where a bit of math-related humor is appreciated.
Can I get this design as a hoodie or tank top?
The same design is available on classic and ladies shirts, hoodies, sweatshirts, and tank tops. See the Product details above for the full size range.




















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