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Shtirlitz [24]
3 years ago
10

There are values of t so that sin t=.3 and cos t=-.6 True or false

Mathematics
2 answers:
antiseptic1488 [7]3 years ago
8 0

Answer:

false

Step-by-step explanation:

ape x

nignag [31]3 years ago
5 0
Using the identity sin^2(t)+cos^2(t)=1
and 
given sin(t)=0.3,
we can find cos(t) by substituting
sin^2(t)+cos^2(t)=1
0.3^2+cos^2(t) = 1
cos^2(t)=1-0.3^2=1-0.09=0.91
cos(t)=sqrt(0.91)= 0.954  ≠  0.6
So the given proposition is false.
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Dante and Mia have a total of 350 pennies in their piggy banks, altogether. After Dante lost half of his pennies and Mia lost on
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Answer:

150 pennies were lost altogether

Step-by-step explanation:

Let the initial number of pennies owned by Dante be x pennies

Let the initial number of pennies owned by Mia be y pennies

Mathematically ;

x + y = 350 •••••••(i)

So after losing half, dante will have x/2 pennies left.

Mia lost 1/3 so she will have 2/3y left

So after all the losses, they both had equal amount of pennies

This means that;

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Cross multiply;

3x = 4y •••••••(ii)

Let’s solve both equations simultaneously;

From i , x = 350-y

Substitute this into equation ii

3(350-y) = 4y

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y = 1050/7

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since x = 350-y

x = 350-150 = 200

Now Dante loss x/2 = 200/2 = 100

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