Question

if sinA=3upon 4,then cos A is​

Answer 1

Answer:

$\sqrt{7}$/4

Step-by-step explanation:

sin(A) = 3/4

Construct a right angled triangle with opposite side 3 units and hypotenuse as 4 units then, the other side will come out to be $\sqrt{7}$  units

cos(A) = Adjacent/Hypotenuse

= $\sqrt{7}$/4