Express into Product form Sin40 +Sin20
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Answer:
sin40 + sin20 = sin20 (2cos20 + 1)
Step-by-step explanation:
sin40 + sin20
= sin(20+20) + sin 20
= 2sin20.cos20 + sin20 -------(sin2A = 2sinA.cosA)
= sin20 (2cos20 + 1)
so,
sin40 + sin20 = sin20 (2cos20 + 1)
Hope this helps you :)
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