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Dmitrij [34]
3 years ago
7

SIN x degrees = 8/10

Mathematics
1 answer:
liubo4ka [24]3 years ago
7 0

\sin(x)  =  \frac{8}{10}  \\  \alpha  =  \sin {}^{ - 1} ( \frac{8}{10} )  \\  = 53.13010235
a (alpha) refers to the angle

you'll still get the same answer if you do
sin^-1 4/5
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If angle ABD is 90 degrees. Select all of the angles that measure 42 degrees.
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Answer:

Measure of angle 2 and angle 4 is 42°.

Step-by-step explanation:

From the figure attached,

m∠ABC = 42°

m(∠ABD) = 90°

m(∠ABD) = m(∠ABC) + m(∠DBC)

90° = 43° + m(∠DBC)

m(∠DBC) = 90 - 43 = 47°

Since ∠ABC ≅ ∠4 [Vertical angles]

m∠ABC = m∠4 = 42°

Since, m∠3 + m∠4 = 90° [Complimentary angles]

m∠3 + 42° = 90°

m∠3 = 90° - 42°

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Since, ∠5 ≅ ∠3 [Vertical angles]

m∠5 = m∠3 = 48°

m∠3 + m∠2 = 90° [given that m∠2 + m∠3 = 90°]

m∠2 + 48° = 90°

m∠2 = 90 - 48 = 42°

m∠3+ m∠4 = 90° [Since, ∠3 and ∠4 are the complimentary angles]

48° + m∠4 = 90°

m∠4 = 90 - 48 = 42°

Therefore, ∠2 and ∠4 measure 42°.

5 0
4 years ago
9-3 divided by 1/3 +1
Andrei [34K]
Nine thirds? If so its would be 9/3 / 1/3?

The answer would be 1/3 / 1/3+1 making it 2/3

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Answer:

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Step-by-step explanation:

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Step-by-step explanation:

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Step-by-step explanation:

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