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Brut [27]
3 years ago
7

Please prove the following trigonometric identity.​

Mathematics
1 answer:
Brums [2.3K]3 years ago
3 0

Step-by-step explanation:

solution:- from LHS 1-cos²x/sinx

∵ 1-cos²x = sin²x

∴ sin²x /sinx = sinx

from RHS tanx × cosx

∵tanx = sinx×cosx

∴ sinx/ cosx × cosx = sinx

Since, LHS = RHS proved ___

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What is the radius of a circle if the area is 78.5 cm^2
Verizon [17]
78.5= (3.14)r^2
25=r^2
5=r
So, the radius of a circle with an area is 78.5 cm^2 is 5 cm^2
3 0
3 years ago
A linear relation is given by the function f (x) = −7x +18 . If (x, 46) is on the function, the value of x is
prohojiy [21]

Answer:

x=-4

Step-by-step explanation:

46 = -7x + 18

subtract 18 from each side to get:

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Please help, will give brainliest! :)
Nonamiya [84]

Answer:

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6 0
2 years ago
Given f (x) = 3x - 5 find f (x - 2)
antiseptic1488 [7]

Answer:

3x-11

Step-by-step explanation:

f (x) = 3x - 5

f(x-2)

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f (x-2) = 3(x-2) - 5

           =3x-6 -5

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3 0
3 years ago
The Martian Colonies elect their government through a lottery. There are 100,000 people living on Mars, and every year, a counci
Rom4ik [11]

Answer:

100,000C999

Step-by-step explanation:

Given that the Martian Colonies elect their government through a lottery. There are 100,000 people living on Mars

every year, a council of 99 co-equal leaders is randomly selected from the population.

Since these are members, order of selection of not important

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No of persons to be selected = 999

No of ways this can be done =

999 out of 100,000

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