Find the specific value by using a half-angle identity. Cosine of 5 pi split by twelve

You are watching: Find the exact value by using a half-angle identity. cosine of five pi divided by twelve.

surfacetoairnewyork.com: Step-by-step explanation:

The provided expression is To discover the exact value making use of identities, we can split the angle in a amount that is equivalent, the is, us rewrite the expression.

Let"s rewrite the expression We deserve to rewrite this way, due to the fact that the sum of those fractions offers the original one. Then, us simplify Now, right here we have to transfor from radians come degrees, due to the fact that that means we can acquire half-angles Then, we division each portion in a method that the last expression consists of halves  The half-angle identification is In this case, , replaing that in the identity, we have But,  Send
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Can you help me through that?​
siniylev <52>

surfacetoairnewyork.com:

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100/360

Step-by-step explanation:

A one is 360 degrees

100/360

10/36

5/18

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Square source of 289 = 17 ftso this rug would certainly not to the right the room because one next is 16 ft long.

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surfacetoairnewyork.com:I=103395.6

Step-by-step explanation:

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The first one, because it can not be represented as a/b.

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