Prove it is true or false If true please state the reason in brief . Q.20. If A = 0; then sin 2A = 2 sin A. Is it true? Share with your friends Share 0 Sandeep Saurav answered this Dear Student, sin 2A is defined as 2 sin A cos A for any angleSo, for A=0 alsosin 2A=2 sin A cos AWhich meanssin 2A=2 sin A is not correct for A=0you can claim that the value of LHS and RHS at A=0 is same(i.e. 0).so, it should be correct.but sin 2A=2 sin A is an identity not valuethat's why it is incorrect. Regards 0 View Full Answer