If cot x =3 then what is the answer of this?

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If cot x =3 then what is the answer of this?

# 1/(1+cos x) + 1/(1-cos x) = ? #

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Answer 1 · 2017-02-13T14:49:35

20

Explanation:

Expression #E = 1/(1 + cos x) + 1/(1 - cos x) = #
#[(1 - cos x) + (1 + cos x)]/(1 - cos^2 x) = 2/sin^2 x#
Find #sin^2 x# by using trig identity:
#sin^2 x = 1/(1 + cot^2 x)#
In this case:
# sin ^2 x = 1/(1 + 9) = 1/10#
There for
#E = 2/(sin^2 x) = 20#

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If cot x =3 then what is the answer of this?

# 1/(1+cos x) + 1/(1-cos x) = ? #

1 Answer

Explanation:

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