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

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

A

4

B

2

C

2.5

D

3

लिखित उत्तर

Verified by Experts

The correct Answer is:

B

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