the value of sinx + cosx/cos^3x=
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Answer:
[tex]tan {}^{3} x + tan {}^{2} x + tan \: x + 1[/tex]
Step-by-step explanation:
sin x + cos x)/cos³ x
= (sin x/cos³ x + cos x/cos³ x)
= tan x sec² x + sec² x
= sec² x (tan x + 1)
= (tan² x + 1)(tan x + 1)
= tan³ x + tan² x + tan x + 1
HOPE THIS WILL HELP YOU
Answer:
Q: (sinX + cosX) / cos³X
A: 1 + tanX + tan²X + tan³X
SEE IMAGE FOR SOLUTION.