2 years ago

If cos A= .5410 and A is an angle between 0 and 90

1 answer:

8 0

When you have a cosine value, in order to get the angle you have to look up the arc cosine value
arc cosine .5410 = 57.248 degrees
here's a good trig calculator
http://www.1728.org/trigcalc.htm

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Find all solutions of the equation in the interval [0,2pi)

irinina [24]

Answer:

{π/4, 5π/4}

Step-by-step explanation:

Tan theta -1=0 could be rewritten as tan Ф = 1. The tangent function is 1 at Ф = π/4. As the period of the tangent function is π,

tan Ф = 1 will be true for Ф = π/4 + π, or (5/4)π.

The solution set is {π/4, 5π/4}.

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2 years ago

HELPPPP PLEASE<br>60 POINTS

soldi70 [24.7K]

Answer:

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Step-by-step explanation:

Find the area of each square and add them to find the area of the rectangle

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2 years ago

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Work out the value 3x10^-5 x 40,000,000 give you answer in standard form

Olenka [21]

<u>★ Solution:</u>

➣ ${\sf{3\:x\:10^{-5}\:x\:4\:x\:10^7$

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2 years ago

Please help. Write as a single logarithm, a) log(13)+log(4) b) log(small 5)(14)-log(small 5)(2)

dsp73

Answer:

a) $\log 52$

b) $\log_57$

Step-by-step explanation:

Use logarithm properties:

$\log_ab+\log_ac=\log_a(b\cdot c)\\ \\\log_ab-\log_ac=\log_a\dfrac{b}{c}$

Then

a) $\log 13+\log 4=\log 13\cdot 4=\log 52$

b) $\log_514-\log _52=\log _5\dfrac{14}{2}=\log _57$

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2 years ago