Question

Calculate tha approximate value of cos46​

Answer 1

Answer:

the approx value is 0.69465

Step-by-step explanation:

Answer 2

use radians for "x:

x= (π / 4) rads =45º

∆x = (1º)● (2π rad) ⁄ (360º) = 0.01745 rads = 1º

  y = cos[x]

 ý = - sin[x]

ý{π ⁄ 4}

= - sin[π ⁄ 4] 

= (-1 ⁄ √2)

= (∆y ⁄ ∆x)

∆y = ∆x • (-1 ⁄ √2)

= (0.01745) • (-1 ⁄ √2)

= -0.01234

y {  (π ⁄ 4) + ∆x  } 

= y { 46º }

= y { 45º } + ∆y 

= 0.695✔️✔️

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