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Vedmedyk [2.9K]
3 years ago
9

Cos(2θ) + 7 cos(θ) = 8

Mathematics
1 answer:
Crank3 years ago
4 0
This pretty hard i really don't know man sorry
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2 years ago
1.4 – 5.5 – 1.73 + 1.8 – 1.09<br><br> –5.12<br> –8.72<br> 5.12<br> –1.66
Novay_Z [31]
<span>We'll do two by two,
1.4 – 5.5= -4.1
</span><span>– 1.73 + 1.8= 0.07
Leaving </span><span>– 1.09,

You get </span> 
=-4.1+<span> 0.07- 1.09
=-4.03-1.09
=-5.12</span>
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