Prove Fatal Search Results

How To: Perform an extremely cool trick using Red Bull

In this clip, learn how to perform the "Amazing Red Bull" trick. You will show your audience a full can of Red Bull and pour a bit out to prove it. You will then flip the can completely upside down without ANY liquid spilling out! You can also shoot something like a pencil or pen inside the upside down can to prove that there is an opening. This trick relies on a bit of slight of hand and some help from gravity. Check it out and totally amaze your friends with this cool illusion.

How To: Prove cos(a+b)=(cos a)(cos b)-(sin a)(sin b) in trig

Need help proving the cos(a+b) = (cos a)(cos b)-(sin a)(sin b) trigonometric identity? This free video lesson will show you how. From Ramanujan to calculus co-creator Gottfried Leibniz, many of the world's best and brightest mathematical minds have belonged to autodidacts. And, thanks to the Internet, it's easier than ever to follow in their footsteps (or just finish your homework or study for that next big test). With this installment from Internet pedagogical superstar Salman Khan's series ...

How To: Prove sin(a+b)=(cos a)(sin b)+(sin a)(cos b) in trig

Need help proving the sin(a+b)=(cos a)(sin b)+(sin a)(cos b) trigonometric identity? This free video lesson will show you how. From Ramanujan to calculus co-creator Gottfried Leibniz, many of the world's best and brightest mathematical minds have belonged to autodidacts. And, thanks to the Internet, it's easier than ever to follow in their footsteps (or just finish your homework or study for that next big test). With this installment from Internet pedagogical superstar Salman Khan's series of...

How To: Prove congruent triangles with SSS and SAS

This is a video tutorial on how to prove congruent triangles with SSS and SAS test. SSS means side-side-side and SAS means side-angle-side. For applying the SSS test of congruency, each side of one triangle must be congruent to the corresponding side of the other triangle. For applying the SAS test of congruency, two corresponding sides of the two triangles must be congruent as well as the angle between those two sides of each triangle must be congruent. Follow the rest of the video to unders...

How To: Build a potato battery

Like a lemon, a potato can produce electricity. This science experiment was prepared by Ebtisam Al Anzoor and demonstrated by Mustafa Daif. The electricity is proven using an analog micro ameter. The positive is copper from a penny or copper coin while the negative is a galavanized nail. The potato releases a charge and is further proven when it is connected to a calculator. You can daisy chain the potatoes for a greater charge.

How To: Geometrically prove the Pythagorean theorem

From Ramanujan to calculus co-creator Gottfried Leibniz, many of the world's best and brightest mathematical minds have belonged to autodidacts. And, thanks to the Internet, it's easier than ever to follow in their footsteps. With this installment from Internet pedagogical superstar Salman Khan's series of free math tutorials, you'll learn how to perform a geometric proof of the Pythagorean theorem.

How To: Remove a canker-diseased branch with a saw

Cankers, if left untreated, can grow and prove lethal for your trees. In this installment of the Fruitwise Heritage Apple guide to apple pruning, Stephen Hayes demonstrates how to amputate a diseased tree branch with a saw. Watch and learn why, as Stephen puts it, "a seen canker is a gone canker."

How To: Remove stretch marks with lasers

In this tutorial, we learn how to remove stretch marks with lasers. The laser treatment is the most effective for removing stretch marks. This will turn the purple marks lighter, and once they are silver/white, they will make those less apparent. The Affirm laser treatment is proven to be extremely effective to remove the stretch marks, and make them only noticeable under a microscope. It will take several sessions to drastically remove the stretch marks, but it will be worth it in the end. D...

How To: Cure acne with a homemade mask

Take care of that acne without any expensive products that dry you out. This proven method only requires three ingredients: Oatmeal, honey and bioyogurt. This all natural remedy is all you need to have beautiful, clear skin again. This video will show you how make a natural homemade acne mask.

How To: Make gluten-free gravy

Don't give up turkey gravy just because you're cooking for a gluten-free diet. Use these tips when preparing this Thanksgiving favorite. Gluten-free diets are proven to help digestion and ease a variety of ailments. This gravy will make your gluten-free meal savory.

How To: Play the didgeridoo for beginners

Interested in learning how to play the didgeridoo? If so, this video lesson may prove a good place to begin. This tutorial will walk you through the rudiments of didgeridoo playing, including tonal techniques for varying the pitch, volume and timbre of your didge. For more information, and to get started playing didgeridoo yourself, watch this helpful video tutorial.