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ki77a [65]
3 years ago
7

In right triangle ABC, ∠C is a right angle and sin A = sin B. What is m∠A? A. 30° B.45° C. 60° D. 75°

Mathematics
2 answers:
Juliette [100K]3 years ago
8 0
45 degrees has two equal angles
ruslelena [56]3 years ago
8 0

Answer:

Option B is correct.

Step-by-step explanation:

Given ∠C is a right angle in Δ ABC

          sin A = sin B

To find: m∠A

Figure is attached.

Consider,

sin A = sin B

\frac{CB}{AB}=\frac{CA}{AB}        (using trigonometric ratio)

⇒ CB = CA

Δ ABC is isosceles right angled triangle,

using result, angles opposite to equal sides are equal in ΔABC.

we get,

∠A = ∠B

Now using angle sum property of triangle,

∠A + ∠B + ∠C = 180°

2∠A + 90 = 180

2∠A = 90

∠A = 45°

Therefore, Option B is correct.

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Jlenok [28]

Answer: 24 inches.

Step-by-step explanation:

If each section length is 4 inches, then that means that each person will need to eat a sandwich section that is at least 4 inches.

There are 6 people, which means that each person will eat 4 inches of a sandwich.

To calculate the length of the sandwich Riko should order, we should mutliply 6 by 4, because there are 6 people and each person will be eating 4 inches of a sandwich.

6 x 4 = 24.

In conclusion, the smallest sandwich Riko should order is a sandwich that is 24 inches long.

(Quick Note: This is also the smallest sandwich Riko could order, because the text states that each person eats at least 4 inches.)

5 0
3 years ago
Find the vector with initial point p (4, 3) and terminal point q (–9, –4).
lana66690 [7]
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6 0
3 years ago
What is the slope-intercept form of the equation of the line with a slope of 3 and y-intercept at the origin (0,0)?
Viktor [21]

Answer:

Step-by-step explanation:

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8 0
2 years ago
Janet is buying a $28 necklace. The store reduces the price by 20% and then applies a $2 off coupon. How much will Janet pay for
Leokris [45]
Okay well the starting is 28 dollars, right. But since there is a 20 percent discount, you have to turn 20% to a decimal. That means moving the decimal sign twice to the left to make it .20. From the it would be .20*28, that should equal 5.6. Now, that 5.6 is the amount you have to take away, it is the price of the sale. From then, you subtract which is 28-5.6 which should be 22.4. From that 22.4 you now take away two dollars and then it should be 22.4-2 which should be 20.4. Now that is your answer, 20.4.
4 0
3 years ago
Read 2 more answers
3x²-30x+9=0<br> PLEASE HELP<br> COMPLETING THE SQUARE WILL MARK BRAINLIEST
nlexa [21]

Answer:

i have done the cutting of x's exponent

Step-by-step explanation:

= 3x - 30+9 =0

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= 3x= 21

= x = 21/3

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