Application problems
we freeman family wants to plant a new grass field for their turkeys. the length or
want to use i stand the width oft is 10 ft. the pass that they want to put down costs $8.52 per
square fool how much is it going to cost for the freeman family to create their new grass held for their? ​

answer:

choice b is correct answer.

step-by-step explanation:

we have to find the value of cos∅x where the value of sin∅ is given.

given   that

sin∅ = 1/4

we use   trigonometric identity to solve this question.

trigonometric identity:

sin²∅+cos²∅=1

separating cos²∅

cos²∅= 1-sin²∅

taking square root to above equation

cos∅=√1-sin²∅

cos∅=√1-(sin∅)²

putting the given value of sin∅,we get

cos∅= √1-(1/4)²

cos∅= √1-1/16

cos∅=√16-1/16

cos∅= √15/16

cos∅= (√15)/4

hence, the answer is choice b.

answer:  

step-by-step explanation:

here the give expression is,

we can write,

  ( because )

⇒ option d is correct.