Find the exact value of expression without using a calculator: sin ⁡ ( 40 )...

Patricia Bean

Patricia Bean

Answered

2022-07-27

Find the exact value of expression without using a calculator:
sin ( 40 ) + sin ( 130 ) + sin ( 220 ) + sin ( 310 )

Answer & Explanation

grocbyntza

grocbyntza

Expert

2022-07-28Added 25 answers

sin 220 = sin 40
sin 310 = sin 130
so adding them up = 0

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