Question

1. यदि sin A = COS A तो sin 2A का मान ज्ञात कीजिए।​

Answer 1

Step-by-step explanation:

sin 2A=2sin A×Cos A....

Answer 2

Answer:

Sin2A = 1

Step-by-step explanation:

Given that-

SinA = CosA

We know that-

$At \ \dfrac{\pi }{4} \ Sin \ and \ Cos \ are \ equal.$

So, $A = \dfrac{\pi }{4}$

Sin2A = ?

$Sin2A = Sin[2(\dfrac{\pi }{4})]$

$Sin2A = Sin\dfrac{\pi }{2}$

We know that-

$Sin\dfrac{\pi }{2} = 1$

So, Sin2A = 1

Hence, the value of Sin2A is 1.