3 years ago

I am confused with everything

Mathematics

1 answer:

notsponge [240]3 years ago

5 0

I think it's x^3+2x^2-4

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Lerok [7]

Answer:

x = 71°

Option B is correct answer.

Step-by-step explanation:

We need to find for what value of x is $sin\: x = cos 19^{\circ}$ , where 0°< x < 90°?

Solving:

$sin\: x = cos\: 19^{\circ}\\Finding \:cos\: 19^{\circ}=0.94551\\Putting\:value:\\sin\:x=0.94551\\Now\:taking\:sin\:inverse\\x=sin^{-1}(0.94551)\\x=71^{\circ}$

So, we get x = 71°

Option B is correct answer.

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2 years ago

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Answer:

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Step-by-step explanation:

-16(1.5)^2+120=84

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