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3 years ago

Solve for .....x 2x+8=4

Mathematics

2 answers:

Lynna [10]3 years ago

5 0

Answer:

x= -2

Step-by-step explanation:

isolate x

2x+8=4 subtract 8 on both sides

2x=-4 divide 2 on both sides

x= -2

Naya [18.7K]3 years ago

4 0

Answer:

2x=-4

x=-2

Step-by-step explanation:

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Step-by-step explanation:

I'm going to use $x$ instead of $\theta$ because it is less characters for me to type.

I'm going to start with the left hand side and see if I can turn it into the right hand side.

$\cot(x)+\cot(\frac{\pi}{2}-x)$

I'm going to use a cofunction identity for the 2nd term.

This is the identity: $\tan(x)=\cot(\frac{\pi}{2}-x)$ I'm going to use there.

$\cot(x)+\tan(x)$

I'm going to rewrite this in terms of $\sin(x)$ and $\cos(x)$ because I prefer to work in those terms. My objective here is to some how write this sum as a product.