Question

if A=45°,show that sin 2A=2sinA cosA ​

Answer 1

Answer:

1=1

Step-by-step explanation:

sin 2 (45°)= 2 sin(45°) cos(45°)

sin 90°= 2×1/√2×1/√2

1= 2×1/2

1=1

Hence proved.

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