document.write( "Question 1135700: In Triangle ABC B=5 C=4 the area of the triangle is 15√7 divided by 4. To the nearest tenth calculate A and measure of angle a (in degrees) thank you in advance for helping me out \n" ); document.write( "

Algebra.Com's Answer #753343 by ikleyn(52921) $\"\"$ $\"About$

You can put this solution on YOUR website!
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\n" ); document.write( "\n" ); document.write( "I answered this question and solved this problem under this link\r
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\n" ); document.write( "\n" ); document.write( "https://www.algebra.com/algebra/homework/Trigonometry-basics/Trigonometry-basics.faq.question.1135553.html\r
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\n" ); document.write( "\n" ); document.write( "https://www.algebra.com/algebra/homework/Trigonometry-basics/Trigonometry-basics.faq.question.1135553.html\r
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\n" ); document.write( "\n" ); document.write( "It is the only one true, fully completed and correct solution among the three solution in that post.\r
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\n" ); document.write( "\n" ); document.write( "For your convenience, I copy and paste it here one more time, rounding answer to nearest tenth.\r
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document.write( "For any triangle, its area is half the product of the lengths of any its two sides and the sine of the angle between them.\r\n" );
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document.write( "In your case, the Area = .\r\n" );
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document.write( "Substituting your data, you have  = .\r\n" );
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document.write( "From here,  sin(A) =  = 0.992167.\r\n" );
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document.write( "Then  for angle A you have TWO possible values  m ( < A ) = 82.9°  and  m ( < A) = 180° - 82.9° = 97.1°.    ANSWER \r\n" );
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\n" ); document.write( "\n" ); document.write( "Solved.\r
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\n" ); document.write( "\n" ); document.write( "Please do not post it again,\r
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\n" ); document.write( "\n" ); document.write( "and do not forget to post your \"THANKS\" to me.\r
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