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31/08/2024

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28/08/2024

Want to complete a FREE course in HRM, PROFESSIONAL WRITING or COLLEGE ALGEBRA and get certified?
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28/08/2024

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❣️PURE MATHEMATICS❣️Let's prove that when two straight lines meet, then they are perpendicular to each other and if the ...
28/08/2024

❣️PURE MATHEMATICS❣️

Let's prove that when two straight lines meet, then they are perpendicular to each other and if the gradient of one is m then the other is -1/m. So, their product is -1.

From the diagram,
/AB/ and /CD/ meets at E
Also, F meets E from the x - axis
Clearly, a + b = 90° then a + @ = 90
So, b=@ ........ *
Now, the gradient of AB= FE/GF = tan@ (say m)
Again, gradient of CD = - FE/FH = -1/tanb
recall from * that b = @
So, tanb = tan@ = m
Then the gradient of CD = -1/m

The product of the gradients are m • (-1/m) = -1.

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Trust our service.Dm as well for online Mathematics classes.All grade level.Emmatex Consult
26/08/2024


Trust our service.
Dm as well for online Mathematics classes.

All grade level.
Emmatex Consult

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26/08/2024

Thanks for all.

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28/06/2024

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28/06/2024

Math is fun. 😊

24/05/2020

Emmatex Tutorial Centre (EMC)

QUESTION
Prove that sin17°=2sin17/2cos17/2

SOLUTION
We know,
sin(A+A)=sinAcosA+sinAcosA=2sinAcosA

Then,
sin(A/2+A/2)=2sinA/2cosA/2 ......... i

Now,for sin17°
sin17°=sin(17/2+17/2)
Now put A=A/2 in eqn i

We have
sin(17/2+17/2)=2sin17/2cos17/2
=sin17°=2sin17/2cos17/2
Thus,proved

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Call 08096292281 for more info.

04/05/2020

EMC

We learn
* Trigonometry
* Calculus
* Bearing and distances
* Geometry Coordinates
* Logarithm, Naperian logarithm
* Surds (square root,cube root etc)
* Ap,Gp and HP
* Cubic and Quartic equations Using various methods

ND more!!!!!!

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Lagos

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