Mathematics, 21.09.2019 23:30, lelen2021
Find sin (a+b) when sina=(3/5) with 90 degrees < a < 270 degrees, and if cosb=(8/17) with 0 degrees < b< 180 degrees
Answers: 1
, so we expect 
, and 
, so we expect 
. Then by the Pythagorean identity,
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Find sin (a+b) when sina=(3/5) with 90 degrees < a < 270 degrees, and if cosb=(8/17) with 0...
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