Find the area of the shaded portion. The answer is just waiting for you to find it!
In a previous article, we looked at how simple algebraic problems can be solved, the case in point being a rectangle. In this example, notice how similar steps have been followed, except that instead of a perimeter of a rectangle, we shall be considering the angles in a triangle. As before, the material has been [...]
Angles that have sides with a 45°/ 45°/90° usually have a unique ratio. The two legs are the exact same length, and the hypotenuse is that length times √2. Whenever you are given a triangle as shown above - one where two of its angles are 45° and the third is 90°, you can easily [...]
JSS 2 SECOND TERM BASIC TECH Topic: TRIANGLE INTRODUCTION A triangle may be defined as a plane figure contained by three straight lines, known as the sides of the triangles. One of the sides, usually the one most nearly horizontal, is identified as the base. A triangle, as its name implies, has three angles. The [...]
JSS 3 Mathematics Second Term Week 7 Topic: SINE AND COSINE OF ANGLES The sine (abbreviated "sin") and cosine ("cos") are the two most prominent trigonometric functions. All other trig functions can be expressed in terms of them. In fact, the sine and cosine functions are closely related and can be expressed in terms of each other. Definition [...]