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3 years ago

Find the value of x.

Mathematics

2 answers:

zmey [24]3 years ago

8 0

Sin30=opposite side/hypotenuse side
=>1/2=X/25
=>12.5=x
Hope This helps u...!!

zaharov [31]3 years ago

6 0

$x = 25 \sin 30 = 25 (1/2) = \dfrac{25}{2}$

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Vladimir79 [104]

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3 years ago

The following equation involves a trigonometric equation in quadratic form. Solve the equation on the interval [0,2π).

Effectus [21]

Answer:

$\dfrac{\pi}{6}, \dfrac{5\pi}{6}, \dfrac{3\pi}{2}$

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Now, let us try to solve the quadratic equation:

$\Rightarrow 2y^2+2y-y-1=0\\\Rightarrow 2y(y+1)-1(y+1)=0\\\Rightarrow (2y-1)(y+1)=0\\\Rightarrow 2y-1 = 0, y+1 = 0\\\Rightarrow y = \dfrac{1}{2}, y = -1$

So, the solution to the given trigonometric quadratic equation is:

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and

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So, $x$ can be

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3 years ago

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ycow [4]

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I am not sure what seven is since the picture has cropped it out, sorry. Hope this helps!

Happy learning! - Ann

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4 years ago

Read 2 more answers