If sin A= 0.8, find the positive value of cos A​

cosA = 0.6

Step-by-step explanation:

Using the Pythagorean identity

sin²A + cos²A = 1 ( subtract sin²A from both sides )

cos²A = 1 - sin²A ( take the square root of both sides )

cosA = ±

Since only the positive value is required , then

cosA =

         =

         =

         = 0.6

4 packs of water and 7 packs of candy bars

step-by-step explanation:

35x4=140

140/20=7

answer

d. 10

explanation

the distance from point y to wx is the height of the triangle.

using pythagoras theorem,

group similar terms to get,

this implies that,

take positive square root of both sides to get,

this implies that,