Question

find the value of sin 2a when sin a =12\13​

Answer 1

Answer:

120/169

Step-by-step explanation:

When sinA = 12/13, use pythagoras theorem,

base = √13² - 12² = 5

Hence, cosA = 5/13

We know, sin2A = 2sinAcosA

Hence, here

=> sin2A

=> 2sinAcosA

=> 2(12/13)(5/13)

=> 120/169

Answer 2

Answer:

120/169

Step-by-step explanation:

If Sin a=12/13

So It means We have to

Sin a

$\binom{12}{13}^{2}$

Sin a=

$\binom{120}{169}$