3 years ago

Find an exact value. cosine of negative seven pi divided by twelve

1 answer:

marta [7]3 years ago

8 0

Negative radical 6 minus radical 2 all over 4

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Stolb23 [73]

Answer:

Just substitute 0 instead of f (x),therefore

$x { }^{2} - 12x + 36 \\ x = 6$

The answer option is C

7 0

3 years ago

Talja [164]

Term:    3    4      5
Value 20    ..      5
          20 20r 20r^2
So 20r^2 = 5
         r^2 = 1/4
           r = 1/2

5 0

3 years ago

wariber [46]

Answer:

Area of larger circle = $\pi *r^2=3.14(11^2)=379.94$

Area of smaller circle = $\pi *r^2=3.14(3^2)=28.26$

Probability that it lands in the shaded area (smaller circle):

28.26 ÷ 379.94 = 0.07438... = 0.07 (nearest hundredth)

8 0

2 years ago

JulsSmile [24]

Answer:

total ground and wall angle is 90°

beam angle with ground= 51

beam angle with wall =39

because total angle=angle with ground + angle with wall

angle with wall=total angle-angle with ground

angle with wall= 90-51=39

8 0

3 years ago

inna [77]

192.

2(8+4)÷2(8+8) = 1(4+8)×(8+8)

1×12×16=192.

6 0

3 years ago