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-BARSIC- [3]
2 years ago
10

Im so confused PLEASE HELP ASAP

Mathematics
2 answers:
siniylev [52]2 years ago
8 0

Answer:

adding 2 to each number

Step-by-step explanation:

7 +2 = 9 + 2 = 11

Klio2033 [76]2 years ago
6 0
Add 2 to each output I hope this is helpful
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1)cot a/2 -tan a/2 = 2 cot a<br>2) cot b/2 + tan b/2= 2 cosec b<br> prove​
VladimirAG [237]
1)

LHS = cot(a/2) - tan(a/2)

= (1 - tan^2(a/2))/tan(a/2)

= (2-sec^2(a/2))/tan(a/2)

= 2cot(a/2) - cosec(a/2)sec(a/2)

= 2(1+cos(a))/sin(a) - 1/(cos(a/2)sin(a/2))

= 2 (1+cos(a))/sin(a) - 2/sin(a)) (product to sums)

= 2[(1+cos(a) -1)/sin(a)]

=2cot a

= RHS

2.

LHS = cot(b/2) + tan(b/2)

= [1 + tan^2(b/2)]/tan(b/2)

= sec^2(b/2)/tan(b/2)

= 1/sin(b/2)cos(b/2)

using product to sums

= 2/sin(b)

= 2cosec(b)

= RHS
8 0
3 years ago
Plz help will give brainliest
SashulF [63]
The correct answer should be B. 16 degrees:)
3 0
2 years ago
Read 2 more answers
PLEASE HELP I GIVE BRAINLIST! THIS IS ALMOST DUE!
labwork [276]

Answer:

"B A C" 16x20=320

Step-by-step explanation:

8 0
3 years ago
Solve the equation N/-2=-15
otez555 [7]

Answer:

30

Step-by-step explanation:

N/-2=-15

N= -15 times -2

N= 30

4 0
3 years ago
Read 2 more answers
Can someone please answer this ? * will mark as brainiest *
Lena [83]

Answer:

pq= 12 cm

Step-by-step explanation:

3 0
3 years ago
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