Question

if cos A = √3 upon 4 , then find the value of sin 2A​

Answer 1

Answer:

Refer to attachment♣️✌️

Answer 2

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$\cos(a) = \frac{ \sqrt{3} }{4} (given)$

this implies, base = √3 units , hypotenuse = 4 units

therefore, perpendicular = √13

now,

Sin 2A = 2SinA.CosA

= 2 (P/H) (B/H)

= 2 (√13/4) (√3/4)

= (√39 / 8 )____ans

THNKS!!