Answer:
6,000 feet
Step-by-step explanation:
{-2x + 7y = -5
{-2x - 4y = 6 | · (-1)
{2x + 4y = -6 (+)
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-2x + 2x + 7y + 4y = -5 + (-6)
11y = -11 | : 11
y = -1
{y = -1
{2x + 4y = -6
{2x + 4 · (-1) = -6
{2x - 4 = -6 | + 4
{2x = -2 | : 2
{x = -1
i) 3x + 7
ii) x/3 = 9
iii) y = 2x +4
iv) y = 6x
The value of the solution is 3π/2.
What is a trigonometric equation?
An equation involving one or more trigonometric ratios of unknown angles is called a trigonometric equation.
tan x/2 = -1
tanx/2 = tan(-π/4)
tanx=tanФ
⇒ The general equation of tanx=tanФ is
⇒ x=nπ+Ф
x/2=nπ+(-π/4)
at n=0
x/2=-π/4
x=-π/2
at n=1
x/2=π-π/4
x/2=3π/4
x=3π/2
learn more about trigonometric equations here :
brainly.com/question/2088730
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Disclaimer: The question was given incomplete on the portal. Here is the complete question.
Questions: Which value is a solution for the equation tan x/2 = -1?
A. 5pi/4
B. 7pi/4
C. 3pi/4
D. 3pi/2
a=21° b=70°
a=21°(Vertically Opposite Angles)
b+110°=180° (linear pair)
b=180-110
b=70°
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