Question

if sinA=4/3 then cosA =?​

Answer 1

Answer:

√7/3 is the answer or √-7 is the answer

Answer 2

Answer:

hope it should be helpful

Step-by-step explanation:

sina =p/h

and cos=b/h

acc to question

p/h=4/3

then p=4,h=3

to find b

by pythagoreous theorem

h^2=b^2+P^2

3^2=b^2+4^2

9=b^2+16

9-16=b^2

root of 7=b

cos A =root7/3