Evaluate the expression. Assume that all the angles are in Quadrant I. (cos (arctan √3/7))

Comments (4) on “Evaluate the expression. Assume that all the angles are in Quadrant I. (cos (arctan √3/7))”

1. The volume is 2212m cubed

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2. 0.971

   Step-by-step explanation:

   Given the expression (cos (arctan √3/7)) which all lies in the first quadrant. Note that all the trigonometry identities (sin, cos and tan) are all positive in the first quadrant.

   From the expression given

   (cos (arctan √3/7)), we need to get the expression in parenthesis first.

   Let y = (cos (arctan √3/7))

   If u = arctan √3/7

   Then y = cos(u) 1

   Let's get the value of u first

   u = arctan √3/7

   u = arctan(0.2474)

   u = 13.896°

   Substituting u = 13.896° into equation 1, we will have;

   y = cos(u)

   y = cos13.896°

   y = 0.971.

   Hence the expression (cos(arctan√3/7)) is equivalent to 0.971

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3. Ican't do any of the other stuff, but i can get you started. the answer, i believe, is $2.50.

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4. y = 0.971.

   Step-by-step explanation:

   Given the expression (cos (arctan √3/7)) which all lies in the first quadrant. Note that all the trigonometry identities (sin, cos and tan) are all positive in the first quadrant.

   From the expression given

   (cos (arctan √3/7)), we need to get the expression in parenthesis first.

   Let y = (cos (arctan √3/7))

   If u = arctan √3/7

   Then y = cos(u) 1

   Let's get the value of u first

   u = arctan √3/7

   u = arctan(0.2474)

   u = 13.896°

   Substituting u = 13.896° into equation 1, we will have;

   y = cos(u)

   y = cos13.896°

   y = 0.971.

   Reply