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3 years ago

Complete the identity. =( sin (alpha +beta))/ (cos alpha cos beta)=?

1 answer:

4 0

Hi, We know:

Sin(a + b) = 2.Sin(a).Sin(b)

Then,

= 2Sin(a).Cos(b)/Cos(a).Cos(b)

Canceling Cos(b)

= 2Sin(a)/Cos(a)

As Tan(a) = Sin(a)/Cos(a)

Then we will stay:

= 2Tan(a)

Or

= Tan(a) + Tan(a)

There is anything wrong on the alternatives

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Im confused lol can someone plz help me

FromTheMoon [43]

Answer:

4.5 i believe correct me if i'm wrong

Step-by-step explanation:

4 0

2 years ago

If a=8 and b=5 and x=4 and y=6m -2 what is the value of m ?

Serga [27]

Answer:

m = 2

Step-by-step explanation:

Given:

x = 4

y = 6m - 2

a = 8

b = 5

Required:

Value of m

SOLUTION:

x and y are segments of a chord divided when it intersects another chord that also has segments a and b.

According to the Intersecting chords theorem, $a*b = x*y$

Thus:

$8*5 = 4*(6m - 2)$

Solve for m

$40 = 24m - 8$

$40 + 8 = 24m - 8 + 8$

$48 = 24m$

$\frac{48}{24} = \frac{24m}{24}$

$2 = m$

The value of m = 2

3 0

2 years ago

Calculate the sum. 10+ (-42) O A. 52 O B. -32 O C. 32 D. -52

kotykmax [81]

Answer:

Step-by-step explanation:

10 + (-42)

10 - 42

-32

8 0

2 years ago

A = (1, 3, 5, 7, 9)

iragen [17]

Answer:

AU(B n C)= (1,3,5,7,9,6)

Step-by-step explanation:

BnC= (6)

AU(Bn C)= (1,3,5,7,9)U(6)

A U(B n C)= (1,3,5,7,9,6)

5 0

3 years ago

PLEASE HELP! GEOMETRY.

vitfil [10]

I hope this helps you

3 0

3 years ago