find the value of sin40cos20 + cos40sin20
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Answered by
6
look at formula carefully
sin(A+B)= sinA cosB+cosAsinB
sin40°cos20°+cos40°sin20°
sin(40+20)
sin(60°)
√3/2
sin(A+B)= sinA cosB+cosAsinB
sin40°cos20°+cos40°sin20°
sin(40+20)
sin(60°)
√3/2
Answered by
0
sine 40 - sine 20
ans. is 4
ans. is 4
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