Sin 50- Sin 70 + Sim 10=0
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1
Answer:
0
Step-by-step explanation:
=2cos(50°÷2+70°÷2) sin ( 50°÷2 -70°÷2)+sin 10°
= -2 cos60° sin10° + sin 10°
= -2.1/2sin10° + sin 10°
= 0
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