Mathematics

$$\displaystyle\int^b_a\cos x dx$$= sin b-sin a. Is it true?


ANSWER

True


SOLUTION
$$\begin{matrix} \int _{ a }^{ b }{ \cos  x\, dx } =\sin  b-\sin  a \\ \left[ { \sin  x } \right] _{ a }^{ b } \\ \sin  b-\sin  a \\ \, it\, is\, \, true\, \,  \\  \end{matrix}$$
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