This is a question from my Grade 11 Trig homework.
I really do not understand it. If someone could help me please.
Question:
Stefan has set up a right angle EFG on one side of river such that FG measures 20m and angle DEF measures 60 degrees. Without using a calculator, determine the width, DG, of the river.
I really do not understand it. If someone could help me please.
Question:
Stefan has set up a right angle EFG on one side of river such that FG measures 20m and angle DEF measures 60 degrees. Without using a calculator, determine the width, DG, of the river.
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use your exact values table a/sina = b/sinb
a/sin90 = 20/sin60
20Sin90
------------
Sin60
= sin 90 = 1
and sin 60 = sqrt(3/4) THESE ARE THE EXACT VALUES
20(1) / sqrt(3/4)
= 20/ sqrt(3/4)
a/sin90 = 20/sin60
20Sin90
------------
Sin60
= sin 90 = 1
and sin 60 = sqrt(3/4) THESE ARE THE EXACT VALUES
20(1) / sqrt(3/4)
= 20/ sqrt(3/4)