3 years ago

Mathematics probability

Mathematics

1 answer:

Gelneren [198K]3 years ago

6 0

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

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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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3 years ago

Multiply (2.5 x 10 ^-8) ( 9x10 ^ - 10 ) Express answer in scientific notation

earnstyle [38]

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kari74 [83]

A(-4, -1)
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How to tell that faction is unit fraction

erica [24]

Multiply the denominator by the whole number. Make that product the numerator. Let us now revisit the rule for changing a mixed number to an improper fraction<span> (Lesson 20).</span>

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Evaluate. Write your answer as an integer or as a decimal rounded to the nearest hundredth. tan 26° = ___

barxatty [35]

Answer:

0.49

Explanation:

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tan 26°

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