Question

if sin A = 1/2, cos B = 1/2, find A, B and sin 2A

Answer 1

Answer:

SinA=30○=1/2

So..A=30

Cos B=60○=1/2..

B=60○

Sin 2A=sin2×(30)=60..

Step-by-step explanation:

Answer 2

$A=30^{\circ}$

$B = 60^{\circ}$

$Sin 2A = \frac{\sqrt{3}}{2}$

Step-by-step explanation:

$Sin A = \frac{1}{2}$

$A = Sin^{-1}(\frac{1}{2})$

$A=30^{\circ}$

$Cos B = \frac{1}{2}\\\\B = Cos^{-1}(\frac{1}{2})\\\\B = 60^{\circ}$

$Sin 2A = Sin 2 \times 30 = Sin 60^{\circ} = \frac{\sqrt{3}}{2}$

#Learn more:

Sin(A+B) =√3/2, cos(2A-B)= 1/√2

Find A and B

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