Question

जर sine = 4/5, तर cose ची
किंमत = ?​

Answer 1

Answer:

cosE = 3/5

Step-by-step explanation:

sinE = 4/5 = opposite/hypotenuse

cosE = adjacent/hypotenuse

let hypotenuse be AC = 5

opposite side be AB = 4

and adjacent be BC

By Pythagoras theorem,

BC² = AC² - AB²

BC² = 5² - 4²

BC² = 25 - 16

BC = √9

BC = 3

So, adjacent is 3

Therefore,

cosE = adjacent/hypotenuse

cosE = 3/5