Hi: Solve 6cosēθ-8sinx-3=0 , in the range 0 to 2∏ I can't use Latex yet so I have uploaded a scanned attempt. My solutions are at: x=0.31 x=2.83 Am I close or in another game altogether?
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Originally Posted by stealthmaths Hi: Solve 6cosēθ-8sinx-3=0 , in the range 0 to 2∏ I can't use Latex yet so I have uploaded a scanned attempt. My solutions are at: x=0.31 x=2.83 Am I close or in another game altogether? Looks fine to me
Originally Posted by stealthmaths Hi: Solve 6cosēθ-8sinx-3=0 , in the range 0 to 2∏ I can't use Latex yet so I have uploaded a scanned attempt. My solutions are at: x=0.31 x=2.83 Am I close or in another game altogether? Hi stealthmaths, You've solved for $\displaystyle Sinx$ or $\displaystyle Sin\theta$ $\displaystyle x=\theta=Sin^{-1}(0.31),\ \pi-Sin^{-1}(0.31)$
Originally Posted by Archie Meade Hi stealthmaths, You've solved for $\displaystyle Sinx$ or $\displaystyle Sin\theta$ $\displaystyle x=\theta=Sin^{-1}(0.31),\ \pi-Sin^{-1}(0.31)$ Ignore me, I'm a spoon >.<
sinx=-4+√34/6 sinx=0.3 x=0.31 So I plot on the sin graph where 0.31 is and draw along to find the second point and I get ∏-0.31 giving 0.31 and 2.83 What am I missing? I'm being a spoon?
Looks fine, just checking that you took the inverse sine, you most likely did, answers are coincidental to 1 decimal place.
yes. Great! Thank you both. I doubt your a spoon e^(i*pi)
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