Question

If sin A =0.5,then what is the value of cos A

Answer 1

hello users.....

Given that :
sin A = 0.5 = 1/2

we have to find :-
cos A = ?

solution :-
we know that :-
cos A = √(1- sin²A )

here,
cos A = √ (1- 1/2²)
=> √ ( 1 - 1/4 )
=> √ (4-1)/4
=> √3/4
=> √3 ×1/2 or √3 /2 answer

✡✡ hope it helps ✡ ✡

Answer 2

Sin A=5/10
So, hypotenuse=10
And a side=5(opposite side)
So) other side) ² =(10)²-(5)²
(Other side) ²=75
Other side =√75(adjacent side)
So, cos a=side adj. /hypotenuse
Cos a=√75/10