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Byju's Answer
Standard X
Mathematics
Standard Values of Trigonometric Ratios
If θ = 1√3....
Question
If
cot
θ
=
1
√
3
. find the value of
1
−
cos
2
θ
2
−
sin
2
θ
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Solution
Given :
cot
θ
=
1
√
3
⇒
θ
=
π
3
∴
sin
π
3
=
√
3
2
and
c
o
s
π
3
=
1
2
→
1
−
cos
2
θ
2
−
sin
2
θ
=
1
−
1
4
2
−
3
4
=
3
5
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