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3 years ago

2 geometry questions.. will mark brainliest

Mathematics

1 answer:

Andru [333]3 years ago

3 0

Answer to one im pretty sure is 136.4 degrees and to number 2 is a parallelogram (rectangle or square) you know because the side AD is equal to BC and AB is equal to DC

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Find the exact values of sin2 θ for cos θ = 3/18 on the interval 0° ≤ θ ≤ 90°

mote1985 [20]

Answer:

$sin(2\theta)=\frac{\sqrt{35} }{18}$

Step-by-step explanation:

Recall the formula for the sine of the double angle:

$sin(2\theta)=2*sin(\theta)*cos(\theta)$

we know that $cos(\theta)=\frac{3}{18}$ , and that $\theta$ is in the interval between 0 and 90 degrees, where both the functions sine and cosine are non-negative numbers. Based on such, we can find using the Pythagorean trigonometric property that relates sine and cosine of the same angle, what $sin(\theta)$ is:

$cos^2(\theta)+sin^2(\theta)=1\\sin^2(\theta)=1-cos^2(\theta)\\sin(\theta)=\sqrt{1-cos^2(\theta)} \\sin(\theta)=\sqrt{1-(\frac{3}{18} )^2}\\sin(\theta)=\sqrt{1-\frac{9}{324} }\\sin(\theta)=\sqrt{\frac{324-9}{324} }\\sin(\theta)=\sqrt{\frac{315}{324} }\\\\sin(\theta)=\frac{3}{18}\sqrt{35 }$

With this information, we can now complete the value of the sine of the double angle requested:

$sin(2\theta)=2*sin(\theta)*cos(\theta)\\sin(2\theta)=2*\frac{3}{18} \,\sqrt{35} \,\frac{3}{18}\\sin(2\theta)=\frac{2*3*3}{18*18}\,\sqrt{35} \\sin(2\theta)=\frac{\sqrt{35} }{18}$

6 0

3 years ago

9z9s9sttozzlgzlgzlglzglzglhxlgzlgxgysl

Leokris [45]

Answer:

$9hl^9og^9s^{11}t^2x^2yz^{17}$

Step-by-step explanation:

Either you wanted me to simplify all those variables or you just had a seizure on your keyboard.

5 0

3 years ago

Please help as soon as possible. I'm writing a research paper and this is one question it must answer. I am stuck on it.

STALIN [3.7K]

cell division? kkkookwk

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3 years ago

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52,300,000 in scientific nation

andrezito [222]

Answer:

Move the decimal so there is one non-zero digit to the left of the decimal point. The number of decimal places you move will be the exponent on the 10

If the decimal is being moved to the right, the exponent will be negative. If the decimal is being moved to the left, the exponent will be positive.

5.23×10 to the 7th power

Step-by-step explanation:

6 0

3 years ago

b) Subi brought 5 pencils at Rs 12 each and she gave a Rs 100 note to the shopkeeper for the payment. How much rupees did the sh

MrRissso [65]

Answer:

cost of 1 pencil = ₹12

cost of 5 pencil = 12×5 = 60

1) money for the payment = ₹60

2) Money return by shopkeeper = ₹40

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3 years ago

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