Description
Find sin 2x, cos 2x, and tan 2x from the given information.
sinx=(5/13), x is 1
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Explanation & Answer
According to given question
if x is 1
Sinx = 5/13
Cosx = 12/13
Cosx = 1 - 2 SIn^2x/2
Sinx/2 = Sqrt (1-Cosx / 2)
Sinx/2 = 1/Sqrt26
Cosx = 2Cos^2x/2 - 1
Cosx/2 = Sqrt(Cosx +1 / 2) = 5/Sqrt26
Tanx/2
=Sinx/2 / Cosx/2
= 1/Sqrt26 / 5 / Sqrt26
=1/5
Answer
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