2 years ago

PLEASE HELP!! If you can show your work. I wanna know how you solved it. :)

Mathematics

1 answer:

Damm [24]2 years ago

8 0

Answer:

:) i have no idea have a good day hope u get it

Step-by-step explanation:

You might be interested in

if cos a = 1/3 then the positive value of tan 1/2a is? i did radical 2/3 over 4/3, but im not sure what to do now.

Vedmedyk [2.9K]

Hello,

$tg( \frac{a}{2} )=\pm \sqrt{ \dfrac{1-cos(a)}{1+cos(a)} } \\
=\pm \sqrt{ \dfrac{ \dfrac{2}{3} }{ \dfrac{4}{3} } } =\pm \sqrt{ \dfrac{1}{2} } =\pm \dfrac{ \sqrt{2} }{2} \\

+\ if\ \dfrac{a}{2}\ in\ 1\ quadrant\ (or \ 3)}\\

-\ if\ \dfrac{a}{2}\ in\ 2\ quadrant\ (or \ 4)}\\
$

6 0

2 years ago

Find the size of angle BAC. Give your answer to 3 significant figures

Alex777 [14]

Answer:

50.5

Step-by-step explanation:

6 0

3 years ago

Two ratios that are equivalent to 2 : 9

NeTakaya

Answer: