Please help. Trig: Laws of Cosines
If a rhombus whose side measures 10 and the smaller angle is 72*, find the length of the larger diagonal, to the nearest tenth.

16.2

Step-by-step explanation:

Greater angle: 180 - 72 = 108

Diagonal² = 10² + 10² - 2(10)(10)cos(108)

Diagonal² = 261.8033989

Diagonal = 16.18033989

answer: the angel abc is 30°,and the abc is a triangle where the angel bac is 90°

so ac is the half of 24=12ft,and from the pythagorean theorem we find ba

ba=√bc^2-ac^2=√576-144=√432=12√3ft

so bac is 12+12√3=12(1+√3)ft

step-by-step explanation:

f(gx)=f(1/x+2)

=(1/x+2)+2

=(1+2x)/2+2

=(1+2x+4)/2

= (2x+5)/2