1.

If sec 4a=2, then the value of A is ?​

Answer»

ANSWER:

SINCE, we can WRITE SEC(4a)=1/cos4a

so,

= 1/cos4a=2

=cos4a=1/2

= cos4a=cosπ/3

= 4a=π/3

= 12a=π

hence, a=π/12 is RIGHT answer.



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