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Furkat [3]
3 years ago
8

Find cos theta! Please Help With Explanation! 25 points!

Mathematics
1 answer:
-Dominant- [34]3 years ago
4 0

Let us first find the angle adjacent to θ. To find this we can construct a right triangle by drawing a line segment from the point (-12,5) straight down to the x-axis. Using right triangle trig...

tan(adjacent angle)=5/12

adjacent angle=22.62 degrees

Since the two angles make a linear pair.

θ=180-22.62=157.38 degrees

cos(157.38 degrees) = -0.92

answer: -0.92

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Step-by-step explanation:

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7 0
3 years ago
1/3x(-6+27y-51z)simplify
Naya [18.7K]
Final result :

9y - 17z - 2
Step by step solution :

Step 1 :

1
Simplify —
3
Equation at the end of step 1 :

1
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Step 2 :

Pulling out like terms :

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27y - 51z - 6 = 3 • (9y - 17z - 2)

Final result :

9y - 17z - 2
8 0
3 years ago
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