cos = 2/5 then find the value of 4+4tan2a
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Given,
cosA =2/5
To find-4+4tan2A.
Solution:-
4+4tan2A
=4(1+2tanA)
=4(1+2sinA/cosA)
=4(1+2sinA/2/5)
=4(1+10sinA/2)
=4+20sinA
cosA =2/5
To find-4+4tan2A.
Solution:-
4+4tan2A
=4(1+2tanA)
=4(1+2sinA/cosA)
=4(1+2sinA/2/5)
=4(1+10sinA/2)
=4+20sinA
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