Question

if cosA=4/5than the value of sinA​

Answer 1

Answer:

3/5

Step-by-step explanation:

HERE

COS A=4/5, IN A RIGHT ANGLED TRIANGLE COS THETA = ADJACENT SIDE / OPPOSITE SIDE

FROM THIS WE CAN CONCLUDE HYPOTENUSE=5 AND ADJACENT SIDE =3

SO,FROM PYTHOGOREAN THOERM I.E.,3^2+

x^2 = 5^2 THEN X^2=4^2

X=2

SIN THETA =OPPOSITE SIDE / ADJACENT SIDE

THEN,SIN A = 4/5

THANK YOU