Question

If sinA = 3/4 , find the value of cosA​

Answer 1

Answer:

we know sin²A+Cos²A =1

coS A =√16-9/16

√7/4

Answer 2

Answer:

√7/4

Step-by-step explanation:

sinA=3/4

sinA=p/h

p=3,h=4

b=√h²-p²

b=√4²-3²

b=√16-9

b=√7

cosA=b/h

√7/4