- hold:
cos a =
cos b
cos c + sin b sin c
cos A
cos A = −
cos B
cos C + sin B sin C
cos a
cos a =
cos A +
cos B
cos C sin...
- when x = π, e i π =
cos π + i sin π . {\displaystyle e^{i\
pi }=\
cos \
pi +i\sin \
pi .}
Since cos π = − 1 {\displaystyle \
cos \
pi =-1} and sin π =...
-
sinpi and
cospi in MATLAB, OpenCL, R, Julia, CUDA, and ARM. For example, sinpi(x)
would evaluate to sin ( π x ) , {\displaystyle \sin(\
pi x),} where...
- \right)&&=-\
cos \left(-{\frac {3\
pi }{2}}+\theta \right)\\[0.3ex]\
cos \theta &={\phantom {-}}\
cos(-\theta )&&=-\
cos(\
pi +\theta )&&=-\
cos(\
pi -\theta )\\&={\phantom...
- {\displaystyle \
cos(\
pi /2)=0,\sin(\
pi /2)=1} . Now the
conditions cos ( θ + π ) = −
cos ( θ ) {\displaystyle \
cos(\theta +\
pi )=-\
cos(\theta )} and...
- sin
Pi x = sin π x {\displaystyle \operatorname {sin
Pi} x=\sin \
pi x} ,
cosPi x =
cos π x {\displaystyle \operatorname {
cosPi} x=\
cos \
pi x} ...
- The
Codex Cospi (or
Codex Bologna) is a pre-Columbian
Mesoamerican pictorial m****cript,
included in the
Borgia Group. It is
currently located in the...
- {\begin{bmatrix}x'\\y'\end{bmatrix}}={\begin{bmatrix}\
cos(-\
pi /2)&\sin(-\
pi /2)\\-\sin(-\
pi /2)&\
cos(-\
pi /2)\end{bmatrix}}{\begin{bmatrix}7\\7\end{bmatri...
- {\
pi }{2}}\right)&=\int _{-\
pi /2}^{\
pi /2}\left({\frac {\
pi ^{2}}{4}}-y^{2}\right)^{n}\
cos(y)\,dy\\[5pt]&=\int _{0}^{\
pi }\left({\frac {\
pi ^{2}}{4}}-\left(y-{\frac...
- as in
cos ( π / 4 ) ≈ 0.707 {\displaystyle \
cos(\
pi /4)\approx 0.707} , or exactly, as in
cos ( π / 4 ) = 2 / 2 {\displaystyle \
cos(\
pi /4)={\sqrt...
