Write the expression as the sine, cosine, or tangent of an angle. tan 35° − tan 15°/1 + tan 35° tan 15°

11 months ago

Write the expression as the sine, cosine, or tangent of an angle.$\frac{ \tan 35° − \tan 15° }{ 1 + \tan 35° \tan 15° }$

11 months ago
OpenStudy (3mar):

Do you mean: $\Large \frac{ \tan 35° − \tan 15°}{ 1 + \tan 35° \tan 15° }=~?~?$

11 months ago
OpenStudy (steve816):

|dw:1479781253157:dw| See any patterns?

11 months ago

Yes, it says to write the expression as the sine, cosine, or tangent of an angle.

11 months ago
OpenStudy (3mar):

11 months ago

It's tan (A-B) right?

11 months ago
OpenStudy (steve816):

Yup

11 months ago
OpenStudy (steve816):

A = 35 and B = 15

11 months ago
OpenStudy (3mar):

Yes, where A=35 and B=15

11 months ago
OpenStudy (mathmale):

So, how would you find tan (35 deg-15deg)? That's tan 20 deg.

11 months ago

So then do I just plug it into the calculator?

11 months ago
OpenStudy (steve816):

^ That is pretty much the answer.

11 months ago
OpenStudy (steve816):

It just says to write the expression.

11 months ago
OpenStudy (mathmale):

I'd suggest you not use the calc. in this case. As Steve stay, rewrite the given expression in the simplest form possible. See my previous comment.

11 months ago

So the answer is tan(20) ?

11 months ago
OpenStudy (3mar):

$\Huge\color{Coral}\checkmark$

11 months ago

That was marked wrong

11 months ago

@3mar

11 months ago
OpenStudy (steve816):

Well, it is right...

11 months ago
OpenStudy (3mar):

why?

11 months ago

I will insert a screenshot

11 months ago
$\Huge\color{LightSkyBlue }ツ$ Where is the "degree" sign?