Pages

Monday, May 16, 2022

Maths

 Blog 2 

For a right angle tringle describe explain what is Pythagoras theorem. what is and how do you identify the hypotenuse. how can you find side and side b ?

- Pythagoras' theorem states that "the square on the hypotenuse is equal to the sum of the squares on the other two sides" for all right-angled triangles. The longest side is the hypotenuse, which is always opposite the right angle. In this triangle, a 2 = b 2 + c 2 and the angle is right.

- The hypotenuse is the longest side in a right triangle, a "opposite" side is the one across from a given angle, and a "adjacent" side is the one next to a given angle. Right triangle sides are described using special words. A right triangle's hypotenuse is always the side opposite the right angle.



Blog 3 

for triangle which is not a rat describe/explain how you label up the sides and angles of a triangle using capital  and lower case letter ?

- The side opposite the right-angle in any right-angled triangle, ABC, is known as the hypotenuse. We follow the convention of labelling the side opposite angle A as a. The opposite side to B is labelled b, and the opposite side to C is labelled c.

You can research images for reference or draw you own or make a digital clip. 

The important point is you know which side a b and c ANGLE ABC! More important is lower case and capitals 





Thursday, May 5, 2022

Maths

To calculate area of a triangle i use 

Area = 1/2 base x height . (perpendicular)

Area = 1/2 x 12 x 4 

= 24m2 


1. 

B = 18m

H = 10m 

Area = 1/2 base x height 

Area = 1/2 x 18 x 10 = 180

= 90m2  



1).

B = 40m

H = 30m 

to calculate area of triangle I use 

Area = 1/2 x b x h 

Area = 1/2 x 40 x 30 

= 600m2 


2).

B =  20m 

C = 38m 

H = ?

to calculate area of triangle I use 

C2  = a2  + b2 

382  = 202  + b2 

1444 = 400 + b2   

1444 - 400 = b2   

1044 = b2  

√1044 = b 32.3

1/2 x 20 x 32.3 = 646m2 

            


 

1. 

B = 28m 

C = 45m 

H = ?

452  = 282  + b2 

2025 = 784 + b2 

2025 - 784 = b2 

1241 = b2 

√1241 = 35.2m

35.2 x 28 = 985.6m2