Question

Express into Product form Sin40 +Sin20
1 point

​

Answer 1

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 :)

Mark me as Brainliest