EFG find the value of e itF 37G49 and f 30 m 1 ABC find the

EFG, find the value of e, it.:F 37\"·/G-49\", and f , 30 m 1 ABC, find the value of 2A, if 18-35. a-7 cm, and b-12 em In ORs. find the value of Q, if LS = 71°, q = 25 m, and s = 36 m In aAn architect designs a house that is 12 m wide. The rafters holding up the roof are equal length and meet at an angle of 68 The rafters extend 0.6 m beyond the supporting wall. How ong are the rafters? 0) Does the sine law apply to right triangles? Explain your answer opyright© 2007, Durham Continuing Education Page

Solution

6) e = ?

angle F = 37⁰

angle G = 49⁰

f= 30 m

angle E = 180 - ( 37 + 49) = 94 degree

from law of Sines:

e / sin E = f / sin F = g / sin G

from e / sin E = f / sin F

e / sin 94 = 30 / sin 37

e = (30 / sin 37)* sin 94

e = 49.727 m