3 years ago

What is does ..... AB=

Mathematics

1 answer:

DochEvi [55]3 years ago

3 0

Step-by-step explanation:

First find the angle BAC

BAC= 180 -(90+50) ( interior angle of triangle is 180)

BAC= 180- 140

= 40 degrees

sin 40= opposite/ hypotaneus

sin 40 = 2/ hyp

0.6427 = 2/ hyp

hypotaneus = 2/ 0.6427

hypotaneus = 3.1118

AB= 3.1118

to nearest hundredth = 3.11

You might be interested in

Solve: 5a + 15 = 45 O a = 12 O a = 6 O a = -6 O a = -12

anygoal [31]

I believe it’s a = 6

4 0

3 years ago

In a year, there are 12 months. Seven months have 31 days. How many have 28 days? *

Nataliya [291]

Answer:

ALLL OF THEM 12

Step-by-step explanation:

5 0

3 years ago

Read 2 more answers

Prove that :- Cos3A-cosA/sin3A-sinA+cos2A-cos4A/sin4A-sin2A=sinA/cos2Acos3A

ad-work [718]

$\dfrac{\cos^3A-\cos A}{\sin^3A-\sin A}+\dfrac{\cos^2A-\cos^4A}{\sin^4A-\sin^2A}=\dfrac{\sin A}{\cos^2A\cos^3A}\\\\L_s=\dfrac{\cos A(\cos^2A-1)}{\sin A(\sin^2A-1)}+\dfrac{\cos^2A(1-\cos^2A)}{\sin^2A(\sin^2A-1)}\\\\=\dfrac{\cos A(-\sin^2A)}{\sin A(-\cos^2A)}+\dfrac{\cos^2A\sin^2A}{\sin^2A(-\cos^2A)}\\\\=\dfrac{\sin A}{\cos A}-1=\tan A-1$

$R_s=\dfrac{\sin A}{\cos A\cos^4A}=\dfrac{\sin A}{\cos A}\cdot\dfrac{1}{\cos^4A}=\tan A\cdot\dfrac{1}{\cos^4A}=\dfrac{\tan A}{\cos^4A}$

$\boxed{L_s\neq R_s}$

8 0

2 years ago

Hey boys... what up :)

iogann1982 [59]

Answer:

I am a girl

Step-by-step explanation:

Have a wonderful day!

7 0

3 years ago

Can someone please help me i would just need the answer

o-na [289]

Answer:

80+50P

Step-by-step explanation:

80 is fixed

50 is variable

1 device = 130

2 decices = 180

8 0

3 years ago