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| 1. |
Sin2A=2sinA then find A |
| Answer» {tex}\\sin^2A = 2\\sin A\\\\=> \\sin^2A - 2\\sin A= 0 \\\\=> \\sin A( \\sin A - 2 )= 0 \\\\=> \\sin A = 0 \\ or \\ \\sin A - 2 = 0 \\\\ => \\sin A = \\sin 0^o \\\\=> A = 0^o{/tex} | |