sin^(2)20^@ + sin^(2) 70^@ - tan^(2) 45^...

`sin^(2)20^@ + sin^(2) 70^@ - tan^(2) 45^(@) + sec^(2) 60^(@)` का मान किसके बराबर है?

A

2.5

B

2

C

3

D

1

लिखित उत्तर

Verified by Experts

The correct Answer is:

B

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