Math, asked by Meenakshimothe23, 1 year ago

sinA=✓√2-1÷2√2 find the value of cos 2A

Answers

Answered by RajeshKumarNonia

1

I am just giving you the way to solve it.....
break Cos2A = 1-2sin^2 (A)
And then substitute the given value of sinA &Simplify it.... That's all...

Previous Question

Next Question

Similar questions

English, 7 months ago

The chapter "A drive in the motor car: What was the driving fashion of that car?

Political Science, 7 months ago

What is the role of the judiciary? Classify the same.

History, 7 months ago

Farasi Biplab ki bhabhi samantar Biplab kivavea ghotiya chhilo...

Physics, 1 year ago

what is meant by sinr...

Social Sciences, 1 year ago

The height range of lesser Himalayas is?

Math, 1 year ago

if alpha and beta are zeroes of the polynomial p(x)=2x^2+5x+k=0.satisfying the relation square of alpha +square of beta +alpha×beta=21/4. then find the value of k...

English, 1 year ago

Your school does not have a playground and many students wish that there was o.They play close to the road and this has caused many problems in the past.

English, 1 year ago

critical analysis of my lost dollar...