Mathematics, 01.02.2020 11:44 minnahelhoor

In right triangle abc a=28° b=7 and

Answers: 3

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Answer from: gatorlove00

B = 62° , a = 3.7°, c = 7.9 ⇒ the 3rd answer

Step-by-step explanation:

* In ΔABC

- a, b, c are the lengths of its 3 sides, where

# a is opposite to angle A

# b is opposite to angle B

# c is opposite to angle C

- m∠A = 28°

- m∠C = 90°

- b = 7

- At first lets find measure of angle B

∵ The sum of the measures of the interior angles in a triangle is 180°

∵ m∠B = 180 - (90 + 28) = 180 - 118 = 62°

* m∠B = 62°

* To solve the right triangle we can use the trigonometry functions

- sin∠B = b/c

∵ sin62° = 7/c ⇒ by using cross multiplication

∴ c = 7/sin62 = 7.9

- tan∠A = a/b

∵ tan28° = a/7 ⇒ by using cross multiplication

∴ a = 7 × tan28 = 3.7

∴ The length of the two sides a = 3.7 and c = 7.9 , m∠B = 62°

* B = 62° , a = 3.7°, c = 7.9

Answer from: anggar20

The correct answer option is C. B = 62°, a = 3.7, c = 7.9.

Step-by-step explanation:

We have a right angled triangle, ABC, where A = 28° and b = 7.

We are to find the measure of angle B, and the lengths of side a and side c.

Angle B:

∠B = 180 - (90 + 28) = 62°

Side a:

$tan62=\frac{7}{a}$

a = 3.7

Side c:

$sin62=\frac{7}{c}$

c = 7.9

Answer from: Quest

62.5 paisa

step-by-step explanation:

4000*70 = 280000

280000-(2000*90) = 100000

4000-2400 = 1600

100000/1600 = 62.5

( give brainliest)

Answer from: Quest

Answer

1 number

explanation

if we use a graphing calculator, there is only one such number $c\in[0.5,0.75]$ that satisfies the conclusion of the mean value theorem, that is, a number $c\in[0.5,0.75]$ such that

$f'(c) = \dfrac{f(0.75) - f(0.5)}{0.75-0.5},$

where the right-hand side is the average rate of change of f on the interval [0.5,0.75], which is the slope of the secant line.

in the attached graph, the black line is the secant line which has its slope as the average rate of change of f on [0.5,0.75], while the orange line is the only tangent line to the graph of f in the interval that satisfies the mvt conclusion.

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In right triangle abc a=28° b=7 and
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