New problem with Katex

[pilgrimlyieu]

New Problem Now! I feel dizzy:(

$\begin{cases}\sin\alpha+\sin\beta={{c1::2\sin\dfrac{\alpha+\beta}{2}\cos\dfrac{\alpha-\beta}{2}}}\\\sin\alpha-\sin\beta={{c2::2\cos\dfrac{\alpha+\beta}{2}\sin\dfrac{\alpha-\beta}{2}}}\\\cos\alpha+\cos\beta={{c3::2\cos\dfrac{\alpha+\beta}{2}\cos\dfrac{\alpha-\beta}{2}}}\\\cos\alpha-\cos\beta={{c4::-2\sin\dfrac{\alpha+\beta}{2}\sin\dfrac{\alpha-\beta}{2}}}\end{cases}$

Moreover, it works normal in the back side.

[ficapy]

It' s normal in my case

[Jwrede]

$\begin{cases}\sin\alpha+\sin\beta={{c1::2\sin\dfrac{\alpha+\beta}{2}\cos\dfrac{\alpha-\beta}{2} }}\\\sin\alpha-\sin\beta={{c2::2\cos\dfrac{\alpha+\beta}{2}\sin\dfrac{\alpha-\beta}{2} }}\\\cos\alpha+\cos\beta={{c3::2\cos\dfrac{\alpha+\beta}{2}\cos\dfrac{\alpha-\beta}{2} }}\\\cos\alpha-\cos\beta={{c4::-2\sin\dfrac{\alpha+\beta}{2}\sin\dfrac{\alpha-\beta}{2} }}\end{cases}$

this works, if you have }}} in a cloze it'll interpret the first two }'s as the end of the cloze so you'll have to type } }}

[pilgrimlyieu]

this works, if you have }}} in a cloze it'll interpret the first two }'s as the end of the cloze so you'll have to type } }}

Thanks you very much! It works!