Mathematics, 06.10.2019 22:00, andersonemma2222
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which sum or difference identity would you use to verify that cos (180Β° - q) = -cos q?
a.
sin (a -b) = sin a cos b β cos a sin b
b.
cos (a -b) = cos a cos b β sin a sin b
c.
cos (a -b) = cos a cosb + sin a sin b
d.
sin (a + b) = sin a cos b + cos a sin b
2.find all solutions for a triangle with a=140,b=10 and a=3. round to the nearest tenth.
a.
b = 15.4Β°; c = 147.6Β°; c = 20.2
c.
b = 15.4Β°; c = 134.5Β°; c = 20.2
b.
b = 16.2Β°; c = 147.6Β°; c =20.2
d.
no solutions
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Need fastt
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which sum or difference identity would y...
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which sum or difference identity would y...
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