Question

If sin =1/10 than cos =

Answer 1

Answer:

cod=√99/10...............

Answer 2

Answer:

$\frac{\sqrt{99} }{10}$

Step-by-step explanation:

as we know $cos^{2} \alpha + sin^{2}\alpha =1$

And $sin\alpha$=1/10

⇒$sin^{2} \alpha$=1/100

⇒$cos^{2} \alpha =1-\frac{1}{100}$

⇒$cos^{2} \alpha =99/100$

⇒$cos\alpha =\frac{\sqrt{99} }{10}$