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Grace [21]
3 years ago
9

Mathematics probability

Mathematics
1 answer:
Gelneren [198K]3 years ago
6 0

Do you have a specific question or something like that which you need answering?

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How do I solve these trigonometric equations!!?
iogann1982 [59]

Answer:

Solution are

i) x = 0, \pi, \frac{3\pi}{2} , 2\pi

Step-by-step explanation:

1) (sinx)(cosx) =0

sin2x/2 =0

2x =0, 2pi, 3pi, 4pi

Hence x = 0, \pi, \frac{3\pi}{2} , 2\pi

---------------------------

2) cos2x + 2 cos x + 1 = 0\\2cos^2 x +2cosx +1 =0\\(cosx+1)^2 =0\\cosx =-1\\x=\pi

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4 0
3 years ago
Multiply (2.5 x 10 ^-8) ( 9x10 ^ - 10 ) Express answer in scientific notation
earnstyle [38]
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erica [24]
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Evaluate. Write your answer as an integer or as a decimal rounded to the nearest hundredth. tan 26° = ___
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