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lora16 [44]
3 years ago
5

I am not quite sure how to do these.

Mathematics
1 answer:
EleoNora [17]3 years ago
6 0
Sin (Π/2 - theta) = sin(Π/2) * cos(theta) - cos(Π/2) * sin (theta)
and as we know sin(Π/2) =1 , cos(Π/2)=0
so sin(Π/2 - theta) = 1* cos(theta) - 0* sin(theta)= cos(theta)
2nd cos(180+ theta) = cos(180)*cos(theta) - sin(180)* sin(theta)
,,, so , cos(180+theta) = -cos(theta)
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Trigonometry help please
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Answer:

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8 0
3 years ago
Two consecutive perfect squares have a difference of $99$. what is the value of the larger perfect square?
Fofino [41]

Answer:

2500

Step-by-step explanation:

Let the first square number be x^2 then the next square number is (x+1)^2.

The difference between these two consecutive numbers is 99.

This implies that:

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We expand to get:

x^2+2x+1-x^2=99

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Step-by-step explanation:

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3 years ago
Scientists say we should sleep 3/8 of a day.How about many hours is this
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Read 2 more answers
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