document.write( "Question 25367: two observers, 215 ft apart, are directly in line with a hot-air balloon. The angeles of elevation of the balloon are 43 degrees and 57 degrees. How high is the balloon? \n" ); document.write( "
Algebra.Com's Answer #13594 by Paul(988)\"\" \"About 
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SInce its, 2 degrees and 1 length. You must apply the sin Law to this. You can not use the Cosine law.\r
\n" ); document.write( "\n" ); document.write( "Let the unknown be θ\r
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\n" ); document.write( "\n" ); document.write( "θ/sin42=215/sin57
\n" ); document.write( "θ=215sin42/sin57
\n" ); document.write( "θ=174\r
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\n" ); document.write( "\n" ); document.write( "Hence the height of the balloon is 174ft.
\n" ); document.write( "Paul.
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