Question

Sin 2a =2 sin a is true when a=

Answer 1

sin2A=2sinA

2sinA*cosA=2sinA

cosA=2sinA/2sinA

cosA=1

A=0

Answer 2

Step-by-step explanation:

★Given

Sin 2a =2 sin a is true when a=

★To Find

Sin 2a =2 sin a is true when a=

★Solution

Check,

${ \longmapsto{\sf {\underline {\red { \sin2a = 2 \sin \: a }}}}}$

${ \longmapsto{\sf {\underline { \pink { \sin 2 (0)2 \: sin(0) }}}}}$

${ \longmapsto{\sf {\underline {\red { \sin0 °\: \: = 2 \sin0° }}}}}$

${ \longmapsto{\sf {\underline { \pink { 0 = 0}}}}}$

Therefore,

L.H.S=R.H.S