Question

if sin2A=24/25 and sinA=4/5 then find the value of cosA​

Answer 1

Answer:

cosA = 3/5

Explanation:

sin2A = 2sinAcosA

Plug in our values:

24/25 = 2 * 4/5 * cosA

24/25 = 8/5 * cosA

cosA = 3/5