Question

sin2A= 2sinA is thre when A= ?​

Answer 1

Answer:

Answer Is Zero ( 0 )

Step-by-step explanation:

Answer 2

Answer:

sin2A=2sinA⟹sin2A−2sinA=0

⟹2sinAcosA−2sinA=0

⟹2sinA(cosA−1)=0

⟹2sinA=0andcosA−1=0

2sinA=0⟹sinA=0⟹A=0+2kπandA=π+2kπk=0,1,2,⋯

cosA−1=0⟹cosA=1⟹A=0+2kπk=0,1,2,⋯

∴A=2kπandA=π+2kπk=0,1,2,⋯