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:

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Step-by-step explanation:

The provided expression is

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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

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We deserve to rewrite this way, due to the fact that the sum of those fractions offers the original one. Then, us simplify

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Now, right here we have to transfor from radians come degrees, due to the fact that that means we can acquire half-angles

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Then, we division each portion in a method that the last expression consists of halves

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The half-angle identification is

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In this case,

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, replaing that in the identity, we have

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But,

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, instead of this

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Can you help me through that?​
siniylev <52>

surfacetoairnewyork.com:

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surfacetoairnewyork.com:

100/360

Step-by-step explanation:

A one is 360 degrees

100/360

10/36

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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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