Fundamental Trigonometric Identities
Trigonometric identities are equations that relate various trigonometric functions and are true for any variable value in the domain. In this post, you can learn fundamental trigonometric identities.
[include_netrun_products_block from-products="product/6-ohio-ost-grade-3-math-practice-tests/" product-list-class="bundle-products float-left" product-item-class="float-left" product-item-image-container-class="p-0 float-left" product-item-image-container-size="col-2" product-item-image-container-custom-style="" product-item-container-size="" product-item-add-to-cart-class="btn-accent btn-purchase-ajax" product-item-button-custom-url="{url}/?ajax-add-to-cart={id}" product-item-button-custom-url-if-not-salable="{productUrl} product-item-container-class="" product-item-element-order="image,title,purchase,price" product-item-title-size="" product-item-title-wrapper-size="col-10" product-item-title-tag="h3" product-item-title-class="mt-0" product-item-title-wrapper-class="float-left pr-0" product-item-price-size="" product-item-purchase-size="" product-item-purchase-wrapper-size="" product-item-price-wrapper-class="pr-0 float-left" product-item-price-wrapper-size="col-10" product-item-read-more-text="" product-item-add-to-cart-text="" product-item-add-to-cart-custom-attribute="title='Purchase this book with single click'" product-item-thumbnail-size="290-380" show-details="false" show-excerpt="false" paginate="false" lazy-load="true"]
A step-by-step guide to fundamental trigonometric identities
The basic trigonometric identities or fundamental trigonometric identities are those trigonometric functions that are true every time for the variables.
The following equations are eight of the most basic and important trigonometric identities. These equations are true for any angle. Countless additional identities can be formed from them. These eight things should be kept in mind.
- \(\color{blue}{cot\left(θ\right)=\frac{cos\:\left(\theta \right)}{sin\:\left(\theta \right)}}\)
- \(\color{blue}{tan\:\left(\theta \right)=\frac{sin\:\left(\theta \right)}{cos\:\left(\theta \right)}}\)
- \(\color{blue}{cot\left(θ\right)=\frac{1}{tan\:\left(\theta \right)}}\)
- \(\color{blue}{sec\left(θ\right)=\frac{1}{cos\:\left(\theta \right)}}\)
- \(\color{blue}{csc\left(θ\right)=\frac{1}{sin\:\left(\theta \right)}}\)
- \(\color{blue}{\left(sin\left(θ\right)\right)^2+\left(cos\left(θ\right)\right)^2=1}\)
- \(\color{blue}{1+\left(tan\left(θ\right)\right)^2=\left(sec\left(θ\right)\right)^2\:\:}\)
- \(\color{blue}{1+\left(cot\left(θ\right)\right)^2=\left(csc\left(θ\right)\right)^2}\)
Related to This Article
More math articles
- How to Solve Point-Slope Form of Equations?
- How to Solve Multiplication Inequalities
- Dive into Fractions: How to Solve Addition and Subtraction Word Problems
- How to Find the Number of Solutions to a System of Equations by Graphing
- How to Solve Simple Interest Problems? (+FREE Worksheet!)
- 4th Grade MCAS Math Practice Test Questions
- What Skills Do I Need for the ASVAB Math Subtests?
- Zero Mastery: How to Tackle Word Problems with Numbers Ending in Zero
- The Ultimate Ready to Work Algebra 1 Course (+FREE Worksheets)
- 7th Grade MEAP Math FREE Sample Practice Questions


































What people say about "Fundamental Trigonometric Identities - Effortless Math: We Help Students Learn to LOVE Mathematics"?
No one replied yet.