Question

If sin A = 3 /5
then the value of cosA is​

Answer 1

Answer:

$\cos(a = 4 \div 5)$

Answer 2

Answer:

4/5

Step-by-step explanation:

sinA=3/5=p/h

so , p = 3 and h = 5

h²=b²+p²

h²-p²=b²

5²-3²=b²

25-9=b²

16= b²

b = 4

therefore , cosA = b/h = 4/5