is there any identitie like 2sinA.cosA = sin 2A
Answers
Answered by
1
yes. sin2A= 2sinA.cosA
sangeetha9:
but how We get this identity explain
sin(A+B)= sinACosB+CosASinB...............Now, take A=B......................................We get Sin(A+A)=SinACosA+SinACosA...........................therefore, it is equal to 2sinA.cosA.............................Hope it helped you
thank you
which class r u?
9th
oh thanks again
Answered by
4
hello there ,
Absolutely, this is an identity that is used mainly in Trigonometry
2sinA.cosA = sin2A
sin (A+B) = sinAcosB + cosAsinB
A= B
sin2A = sinAcosA + cosAsinA
= 2sinA .cosA
hope it helps you ⭐☄✴⭐⭐⭐⭐
Absolutely, this is an identity that is used mainly in Trigonometry
2sinA.cosA = sin2A
sin (A+B) = sinAcosB + cosAsinB
A= B
sin2A = sinAcosA + cosAsinA
= 2sinA .cosA
hope it helps you ⭐☄✴⭐⭐⭐⭐
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