Question

Solve for xx. Round to the nearest tenth, if necessary. ​

Answer 1

Explanation:

take 21 degree as reference angle

using cos rule

cos 21=adjacent/hypotenuse

0.93=4/x

x=4/0.93

x=9.67

x=9.7

Answer 2

x = 4.3

Explanation:

`cos 21 = (adjacent)/(hypotenuse) = (4)/(x)\\\\x = (4)/(cos21) = 4.28`

x= 4.3