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Rudik [331]
3 years ago
14

(1-sin(x))(1+sin(x))=1/1+tan(x^2) Prove that the statement is an identity

Mathematics
1 answer:
nekit [7.7K]3 years ago
4 0

(1-sin(x))(1+sin(x))=1/1+tan(x^2)

I think  the right side is  tan^2 x    ( the square of tan x)

Left side =  1 - sin^2 x

Right side = 1  / ( 1 + (sin^2 x / cos^2x))

= 1  /    (cos^2x + sin^2x) / cos^2 x

Now sin^2 x + cos^2 x = 1  so

this =  1  /   1 / cos^2x

= cos^2x  = 1 - sin^2 x  = Left side    - Proved

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Ksenya-84 [330]

Answer:

650

Step-by-step explanation:

so the way I did this was by adding how much he works per week which is 35 per week. so he works 70 hours in 2 weeks. he earns 10 dollars per hour. so 10 times 70 you get 700 but he spends 50. so 700 minus 50. you get 650. he has 650 dollars left.

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3 years ago
When solving a system of equations, Jared found y = x + 10 for one equation and substituted x + 10 for y in the other equation.
myrzilka [38]
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Tpy6a [65]

Answer:

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Step-by-step explanation:

Without even measuring, just think of this problem logically. Remember that a 1 L is 1000mL, so it is 1000 times more than 1 mL.

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