 This video is related to decrementing identities of class 10. In this video we will learn how to memorize decremented identities easily. So, as we go we have six statemented visuals. So, first of all we have to write 10 here on a regular example. Then sign here, pass here and opposite to 10 we write 4. Or set here and whatever is embedded is set. So, set will be written here on this vertex. So, as we know there are six vertices. So, we have six decrementing ratios which are quoted on the vertices. Now, I join all the opposite vertices and place one in the middle. This hexagon is known as super hexagon. With the help of this hexagon we can learn and memorize decremented identities. So, first identity is sign is equal to one upon cross section. So, here we are focusing on diagonal, first diagonal. Now, we are focusing on the second diagonal which says that cos theta is equal to one upon second. And the third diagonal that says cos theta is equal to one upon 10. Similarly, we can analyze the other identities also like cos 1 or sec theta is equal to one upon 10 theta. And sec theta is equal to one upon cos 1 and n theta is equal to one upon 10. Now, next set of identities. Here you can see once again I made the same regular hexagon and we call this hexagon super hexagon. Now, I will place the trigonometric ratio of your 10, your sign, your this vertex or second vertex. Now, we learn the next identity. Theta is equal to cos 19 degree minus theta. Next is 10 theta is equal to cos and the last is sec is equal to offset 90 degree. Similarly, if I reverse this arrow and replace it is equal to sign 90 degree minus theta. Then is equal to 10 90 degree. The last one is offset theta sec 90 degree. Now, the last identities. Here also cos 4 would like the trigonometric ratios. 10 as you know is your then sign. All the c will be to the right-hand side. So, next can be your power. Now, we can see here there are 6 triangles. 1, 2, 3, 4, 5, and 6. Now, I will shape the coordinate triangles. Now, sign plus cos is equal to 1. Next identity is 1 plus square theta. Now, we can see here here is a square. Now, we can see here there are 6 triangles. Now, we can see here there are 6 triangles. Now, the last one is cos 20 degree minus theta. Now, I will shape the coordinate triangles. Now, I will shape the coordinate triangles.