write value of ( π8+π5)^2
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0
Step-by-step explanation:
ANSWER
cos(π/5)cos(2π/5)cos(4π/5)cos(8π/5)=
2
4
sin(π/5)
1
sin
5
2
4
π
=−
16
1
[∵sin
5
16π
=sin(3π+
5
π
)=−sin
5
π
]
Answered by
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Answer:
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