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3 years ago

Cos A+cosB+CosC=1+4sinA/2sinB/2sinC/2

Mathematics

1 answer:

Scrat [10]3 years ago

5 0

Socratic use det app

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If sin theta = cos theta then find the value of theta

Ksenya-84 [330]

Step-by-step explanation:

$\because \sin \theta = \cos \theta \\ \\ \therefore \: \sin \theta = \sin(90 \degree - \theta) \\ \\ \therefore \: \theta = 90 \degree - \theta \\ \\ \therefore \: \theta + \theta= 90 \degree \\ \\ \therefore \: 2\theta = 90 \degree \\ \\\therefore \: \theta = \frac{90 \degree }{2} \\ \\ \huge \orange{\boxed{\therefore \: \theta = 45 \degree}}\\ \\$

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3 years ago

Today, everything at a store is on sale. The store offers a 20% discount. Write an equation for this situation in terms of y.

SpyIntel [72]

The discount price will be 0.8X dollars.

Step-by-step explanation:

Given,

Price of an item = X dollars

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Amount of discount = 20% of Price of item

Amount of discount =

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The discount price will be 0.8X dollars.

Keywords: discount, subtraction

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3 years ago

5 b.) Bill swims 2/3 of a lap in 7 minute.<br> What is his speed in laps per minute?

Arlecino [84]

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Step-by-step explanation:

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2 years ago

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Xelga [282]

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Step-by-step explanation:

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3 years ago

Read 2 more answers

The nth term for 2 11 26 47

Georgia [21]

The ninth term is 77

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3 years ago

Cos A+cosB+CosC=1+4sinA/2*sinB/2*sinC/2

Cos A+cosB+CosC=1+4sinA/2sinB/2sinC/2