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Assume that θ is a positive acute angle. Given: , cosine, theta, equals, start fraction, 8, divided by, 17, end fraction Given: cosθ= 17 8 ​ Find: , sine, 2, theta Find: sin2θ



Answer :

Answer:

Step-by-step explanation:

Since this is in Quadrant I   sin Θ is also positive

The trig identity  : sin^2 + cos^2 = 1

   will show sin Θ = + 15/17

THEN...another trig identity :

sin (2Θ) = 2 sin cos =  2 ( 8/17)(15/17) = 240/289 = .8304

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