Assume that 0< x < pi/2 and 0< y < pi/2. find the exact value of cos(x+y) if cos x = 3/5 and cos y = 4/5.

a. 25/24

b. -25/24

c. 24/25

d. -24/25

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x coordinate can be written by using the formula, x= x1 + 2/5(x2 - x1)

step-by-step explanation:

formula

x = x1 + p/w(x2 - x1)

let the line segment ab with a(x1,y1) and b(x2,y2)

a point(x,y) divide ab in the ratio, 2: 3 the x coordinate can be written as

x = x1 + p/w(x2 - x1)

here p=2 and w = 2+3

therefore,

x coordinate can be written by using the formula, x= x1 + 2/5(x2 - x1)

similarly y coordinate y = y1 + 2/5(y2 - y1)

sorry i got nothing

step-by-step explanation: