Use sum, differernce, product, or half-angle formulas to find the exact value of each expression

tan 105 degrees
I used the half angle formula, can someone check my answer and see if it's right

Will FAN and MEDAL

Question

Use sum, differernce, product, or half-angle formulas to find the exact value of each expression

tan 105 degrees
I used the half angle formula, can someone check my answer and see if it's right

Will FAN and MEDAL

unknownunknown · Answer

Go ahead and show your answer and working minisweet4.

anonymous · Answer

$$\sin \frac{ \theta }{ 2 }=+- \sqrt{1-5\pi/4}/4$$

My final answer is sqrt 2+sqrt 2/2
@unknownunknown

unknownunknown · Answer

So is this to find the value of tan(105 degrees) ?

anonymous · Answer

You can try different formulas but this is the one I choose because my teacher said I did one thing wrong

unknownunknown · Answer

Alright, I still don't understand the question fully. In your original question you mention tan 105 degrees?

anonymous · Answer

Oh sorry I wrote out the wrong answer, hold on

the_joker<3 · Answer

hmmm... what do you think?

anonymous · Answer

$$\tan \frac{ 210 }{ 2 }=\sqrt{1+\sqrt3/2} / \sqrt{1-\sqrt3/2}$$

For the answer I got sqrt 5/1

the_joker<3 · Answer

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