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ExtremeBDS [4]
2 years ago
7

Trigonometry, just the first one, will mark as brainliest if helpful

Mathematics
1 answer:
jek_recluse [69]2 years ago
5 0

Answer:

a = -0.5

b = −1.73

c = −0.70

d = -\frac{\sqrt{2} }{2} ≈ -0.70710678

Step-by-step explanation:

EXPLAIN Q(a):

sin(−30)

Use the property sin(−x)=−sin(x).

−sin(30)

Get the value of sin(30) from trigonometric values table.

-0.5

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Sveta_85 [38]
<span>We have 2 given numbers:
=> 86 + 68 + 38 = 192
=> 68 + 38 + 86 = 192 also
This kind of process used commutative property system of equation in where:
a + b = b + a
No matter what sequence you are going to use, the answer would always be the same.
In the given 2 equations, notice that both digits of 2 group of equation contains the same number. The only difference is they were added with different orders. Yet the answers are still the same.

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8 0
3 years ago
In ΔRST, s = 58 inches, ∠R=115° and ∠S=19°. Find the length of r, to the nearest 10th of an inch.
Lorico [155]

Answer:

365.9 Inches

Step-by-step explanation:

To find the value of Sin A can be found using the sine rule. the rule states that the ratio of the length facing an angle in a triangle to the sine of the angle is constant. As such,

a/Sin A = b/Sin B = c/Sin C

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Hence,

58/Sin 19 = r/Sin 115

r = 58 Sin 115/ Sin 19

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3 years ago
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Step-by-step explanation:

8 0
2 years ago
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