1.

If CosA=2/5,Then Find the value of 4+4tan²A

Answer»

Answer:

25

Explanation:

cosA=2/5

so, secA=5/2

by squaring

sec^2A=25/4

1+tan^2A=sec^2A (this is an IDENTITY MAY you have LEARNT)

tan^2A=sec^2A-1

=21/4

putting in QUESTION We get

4+21

=25 ANS



Discussion

No Comment Found

Related InterviewSolutions