Question

Perpendicular = 3 cm
Base = 4 cm
Cos b = ?


Solve it

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Answer 1

Given perpendicular = 3cm, Base = 4cm, Hypotenuse = x.

We know that (Hypotenuse)^2 = (Perpendicular)^2 + (base)^2

= > (x)^2 = (3)^2 + (4)^2

= > (x)^2 = 9 + 16

= > (x)^2 = 25

= > (x)^2 = (5)^2

= > x = 5.

So, Hypotenuse = 5cm.

Now,

We know that cos b = Base/Hypotenuse

= > 4/5.

Hope this helps!

Answer 2

❤❤ Good Evening ❤❤  ____________________________________________________________    Thanks !!    Here is your answer which you are searching for    ❣ Step I ❣   ( Write the given )   == >  Perpendicular = 3 cm   ==>  Base  = 4 cm    We have to find Hypotenuse    Let's suppose x    ®®®®®®®®®®®®®®®®®®®®®   ❣ Step II ❣    ( Solve Further By Applying phy. Theorem )    We know that ,    H^2 = P^2 + B^2    ==> x^2 = (3)^2 +(4)^2   ==>  x^2 = 9 + 16    ===> x^2 = 25  x^2 = (5)^2   ==>  x = 5    Therefore , Hypotenuse = 5 cm    ®®®®®®®®®®®®®®®®®®®®®®®®®®®®®® ❣ Step III  ❣    Now ,     We know ,   Cos theta = Base/ Hypotenuse   With reference to B    CosB = B/H  ===> 4/5   ____________________________________________________________________________&    Be Brainly.   Warm Regards ❤     @Brainlestuser