document.write( "Question 1187014: 1. Find the exact value of the following given that sec𝛼 =5 and 270°<𝛼<360°.
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\n" ); document.write( "sin𝛼/2 \r
\n" ); document.write( "\n" ); document.write( "2. Express the product as a sum then find the sum’s exact value.
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\n" ); document.write( "cos11𝜋/12cos𝜋/12\r
\n" ); document.write( "\n" ); document.write( "Hello! For these two problems, I am very confused about what to do. I need help solving both from the beginning.
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Algebra.Com's Answer #820428 by Alan3354(69443)\"\" \"About 
You can put this solution on YOUR website!
1. Find the exact value of the following given that sec𝛼 =5 and 270°<𝛼<360°.
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\n" ); document.write( "sec(A) = 5 ---> cos(A) = 1/5
\n" ); document.write( "sin(A) = sqrt(1 - cos^2) = sqrt(24/25) = 2sqrt(6)/5
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\n" ); document.write( "Look up Half Angle Formulas on Wikipedia for sin(A/2)
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