If 4 tan x = 3 ,then
cos x + sin x÷cos x - sin x
a. 7
b. 7
c. 1/7
d. -1/7
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Answer:
7cosx−24sinx=25(
25
7
cosx−
25
24
sinx)
=25cos(x+α)
where α=tan
−1
7
24
d=25
Option A.
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