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The simplified value of (sin^3 21+cos^3 ...

The simplified value of `(sin^3 21+cos^3 19)/(sin 21+ cos19) +sin^2 69+cos^2 71+ 1/(sec69. cosec71)`

A

4

B

3

C

2

D

1

Text Solution

Verified by Experts

The correct Answer is:
C
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