Mathematics: True or false the value 3pi/2 is a solution for the equation 2sin^2x -sin x -1=0

True or false the value 3pi/2 is a solution for the

ltuthill

14.01.2022

The answer is False. Have a wonderful afternoon

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andresduenas72

14.01.2022

False

Step-by-step explanation:

The given equation is:

2sin^2x-sinx-1

Substituting x= $\frac{3\pi}{2}$ in the above given equation, we have

= $2sin(\frac{3\pi}{2})^2-sin(\frac{3\pi}{2})-1$

= 2(-1)^2-(-1)-1

= 2+1-1

Thus, the value of the given equation by substituting the value of x is equal to 2 and not zero, therefore the given statement is false.

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rutza

02.05.2021

A complimentary angle has to add up two angles to equal 90 degrees.

We have one angle which is 43.5 degrees, so all we have to do is subtract 43.5 degrees from 90 degrees to find the missing angle.

90 degrees minus 43.5 degrees is 46.5 degrees.

That means the missing angle is 46.5 degrees.

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