Test Index

UPSC NDA I 2023 Mathematics Solved Paper

Show Para Hide Para

Consider the following for the next two (02) items that follow :
Let sin‌β be the GM of sin‌α and cos‌α;tan‌γ be the AM of sin‌α and cos‌α.

[NDA I 2023]

© examsnet.com

Question : 31

Total: 120

What is cos‌2‌β equal to ?

(cos‌α−sin‌α)2
(cos‌α+sin‌α)2
(cos‌α−sin‌α)3
‌
(cos‌α−sin‌α)2
2

Go to Question:

Prev Question

Next Question