Introduction to Trigonometry
This lesson covers the basic concepts of trigonometry, including the measurement of angles and the definition of trigonometric functions. It explains the types of angles, the use of protractors for measuring angles, and the concept of quadrants in relation to angles. The lesson also introduces plane
- 00:48 “We also look at, by extension, what we call the Pythagoras theorem and what we call the Sokatoa. So what's this trig? Basically, the word trig came from the Greek word and the Greek word means measurements of triangles o...”
- 04:41 “So with this, we call this the quadrants. Four quadrants of the seco. We have the first quadrant. We have the second quadrant. We have the third quadrant and the fourth quadrant. So we have four quadrants, which we need...”
- 00:02 “My name is John Ogbodo. I'll be looking at today, what's the called trigonometry, ratios of special angles and the topic is, or the subject is photo mathematics. So under this, we are going to understand and look at the...”
Trigonometric Ratios
This lesson covers the identification of sine, cosine, and tangent of an acute angle. It explains how to apply these trigonometric ratios to solve problems involving distances and lengths in right-angled triangles. The relationship between the sides and angles of triangles is also discussed.
- 00:00 “Hello, my name is Oyase, Sunday I'll be taking you mathematics for JSS3 and we have an interesting topic for today, which is trigonometry, an aspect of our measurement and geometry. And the question is what to be the foc...”
- 02:29 “tan which is popularly called soca tua. Now how do we arrive at that? Peking the first one. Let's do an analysis of this triangle on the board. Now we have sine, sine theta. Sine theta is opposite over adjacent. We say o...”
- 03:22 “over hypotenuse. Adjacent over hypotenuse. Now move it out the same way I did. I have the c out, you have the a out and you have the h out. Now going forward we have the last called the tan. Tan theta. Tan theta gives us...”
Carbon and its Allotropes
The lesson covers the characteristics of carbon as an element and its various forms, known as allotropes. It explains the presence of carbon in nature, its compounds, and the two types of carbon oxides. The importance of carbon in living systems and its economic significance is also discussed.
- 21:11 “it called, value? So it's actually used in the manufacture of geysers for such as a producer gas and water gas, all right? So now, we will go on and on, you find out the basic concept here about all these, these are dest...”
- 20:20 “is used for the manufacture of pharmaceutical products and also as a solvent, okay? So for co-ta, co-ta is a mixture of more than 200 different substances, which can be separated by a fraction of distillation, so of cour...”
- 23:36 “My name is Charles Christopher, till next time. [MUSIC]”
Cultism in Nigeria
The lesson covers the definition of cultism and identifies various cult groups and their symbols. It discusses the origin of cult groups in Nigeria, their reasons for formation, the consequences of cultism, and preventive measures against it.
- 00:47 “A secret code is a group of people whose activities are carried out in exclusive locations and at all times we start exposing themselves to their own intimate. Cortezin is an organizational association, group or body of...”
- 02:23 “And their slogan is Snoop Prize No P. Then the Black Acts, the Black Acts is a symbol with the ants' chains and the ants' trying to court the chain. Then we have the Vikings. This is the logo. There's a symbol. Then the...”
- 00:02 “Good day students. My name is Eberechi Nwaeze, and welcome to Civic Education class, today we're looking at Cortezin. By the end of this class, you'll be able to explain the meaning of Cortezin. You'll be able to identif...”