| 19301 |
检验恒等式 |
csc(x)^4-csc(x)^2=cot(x)^4+cot(x)^2 |
|
| 19302 |
检验恒等式 |
csc(x)^4-cot(x)^4=(1+cos(x)^2)/(1-cos(x)^2) |
|
| 19303 |
检验恒等式 |
(csc(x))/(sec(x))+(cos(x))/(sin(x))=2cot(x) |
|
| 19304 |
检验恒等式 |
(csc(x))/(tan(x)+cot(x))=cos(x) |
|
| 19305 |
检验恒等式 |
(cot(x)-tan(x))/(sin(x)*cos(x))=csc(x)^2-sec(x)^2 |
|
| 19306 |
检验恒等式 |
(cot(x)-tan(x))/(sin(x)cos(x))=csc(x)^2-sec(x)^2 |
|
| 19307 |
检验恒等式 |
csc(x)^2=(cot(x))/(tan(x))+1 |
|
| 19308 |
检验恒等式 |
(csc(x)-sin(x))/(csc(x))=cos(x)^2 |
|
| 19309 |
检验恒等式 |
csc(x)^4-cot(x)^4=2csc(x)^2-1 |
|
| 19310 |
检验恒等式 |
csc(x)^4-2csc(x)^2+1=cot(x)^4 |
|
| 19311 |
检验恒等式 |
(sec(x))/(csc(x))=tan(x) |
|
| 19312 |
检验恒等式 |
(sec(x))/(csc(x)-cot(x))-(sec(x))/(csc(x)+cot(x))=2csc(x) |
|
| 19313 |
检验恒等式 |
csc(x)^2tan(x)-tan(x)=cot(x) |
|
| 19314 |
检验恒等式 |
csc(x)^2-cos(x)sec(x)=cot(x)^2 |
|
| 19315 |
检验恒等式 |
csc(y)^2-csc(y)cot(y)=1/(1+cos(y)) |
|
| 19316 |
检验恒等式 |
(sin(3x)-sin(x))/(cos(x)-cos(3x))=cot(2x) |
|
| 19317 |
检验恒等式 |
(sin(A))/(1-cos(A))-cot(A)=csc(A) |
|
| 19318 |
检验恒等式 |
(sin(a)+sin(3a))/(cos(a)+cos(3a))=tan(2a) |
|
| 19319 |
检验恒等式 |
(sin(a-B))/(sin(a)cos(B))=1-cot(a)tan(B) |
|
| 19320 |
检验恒等式 |
(sin(x))/(1+sin(x))-(sin(x))/(1-sin(x))=2tan(x)^2 |
|
| 19321 |
检验恒等式 |
(sin(t))/(1-cos(t))=(1+cos(t))/(sin(t)) |
|
| 19322 |
检验恒等式 |
(sin(A+B))/(sin(A-B))=(tan(A)+tan(B))/(tan(A)-tan(B)) |
|
| 19323 |
检验恒等式 |
(sin(s)+sin(t))/(cos(s)+cos(t))=tan((s+t)/2) |
|
| 19324 |
检验恒等式 |
(sin(145))/500=(sin(20))/a |
|
| 19325 |
检验恒等式 |
(sin(15))/10=(sin(115))/b |
|
| 19326 |
检验恒等式 |
(sin(2x))/(1-cos(2x))=cot(x) |
|
| 19327 |
检验恒等式 |
(sin(3x)+cos(3x))/(cos(x)-sin(x))=1+2sin(2x) |
|
| 19328 |
检验恒等式 |
(sin(4x)+sin(2x))/(cos(4x)+cos(2x))=tan(3x) |
|
| 19329 |
检验恒等式 |
(sin(2x)+1)/(cos(2x))=(cos(x)+sin(x))/(cos(x)-sin(x)) |
|
| 19330 |
检验恒等式 |
(sec(x)+tan(x))/(csc(x)+1)=tan(x) |
|
| 19331 |
检验恒等式 |
(sec(x))/(tan(x)+cot(x))=sin(x) |
|
| 19332 |
检验恒等式 |
(sec(x))/(1-tan(x))=1/(cos(x)-sin(x)) |
|
| 19333 |
检验恒等式 |
(sec(A)-1)/(sec(A)+1)=(1-cos(A))/(1+cos(A)) |
|
| 19334 |
检验恒等式 |
(sec(A)-csc(A))/(sec(A)+csc(A))=(tan(A)-1)/(tan(A)+1) |
|
| 19335 |
检验恒等式 |
(sec(a))/(csc(a))=tan(a) |
|
| 19336 |
检验恒等式 |
(sec(B))/(cos(B))-(tan(B))/(cot(B))=1 |
|
| 19337 |
检验恒等式 |
sec(1)^2x-1=(sin(x)^2)/(cos(x)^2) |
|
| 19338 |
检验恒等式 |
sec(x)^2=1/(cos(x)^2) |
|
| 19339 |
检验恒等式 |
sec(x/2)^2=2/(1+cos(x)) |
|
| 19340 |
检验恒等式 |
sec(x)^4-tan(x)^4=sec(x)^2+tan(x)^2 |
|
| 19341 |
检验恒等式 |
sec(x)^4-tan(x)^4=1+(sin(x)^2)/(cos(x)^2) |
|
| 19342 |
检验恒等式 |
sec(2x)^4=4 |
|
| 19343 |
检验恒等式 |
sec(x)^4tan(x)^2=(tan(x)^2+tan(x)^4)sec(x)^2 |
|
| 19344 |
检验恒等式 |
sec(t)^4-tan(t)^4=2sec(t-1)^2 |
|
| 19345 |
检验恒等式 |
(csc(x))/(cot(x))=sec(x) |
|
| 19346 |
检验恒等式 |
sec(x)^2+csc(x)^2=sec(x)^2*csc(x)^2 |
|
| 19347 |
检验恒等式 |
sec(x)^2-2=tan(x)^2 |
|
| 19348 |
检验恒等式 |
sec(x)^2-2tan(x)=0 |
|
| 19349 |
检验恒等式 |
cos(x)csc(x)^2-cos(x)=sin(x)tan(x) |
|
| 19350 |
检验恒等式 |
cos(x)+2cos(x)sin(x)=0 |
|
| 19351 |
检验恒等式 |
cos(x)+ 2=-cos(x) 的平方根 |
|
| 19352 |
检验恒等式 |
cos(x)(2sin(x)+1)=0 |
|
| 19353 |
检验恒等式 |
cos(x)(cot(x)+tan(x))=csc(x) |
|
| 19354 |
检验恒等式 |
cos(x)(csc(x)+tan(x))=cot(x)+sin(x) |
|
| 19355 |
检验恒等式 |
cos(x)(sec(x)+cos(x)*csc(x)^2)=csc(x)^2 |
|
| 19356 |
检验恒等式 |
cos(x)(tan(x)+2)(2tan(x)+1)=2sec(x)+5sin(x) |
|
| 19357 |
检验恒等式 |
cos(pi+x)=-cos(x) |
|
| 19358 |
检验恒等式 |
cos(t)cot(t)=(1-sin(t)^2)/(sin(t)) |
|
| 19359 |
检验恒等式 |
cos(3t)=4cos(t)^3-3cos(t) |
|
| 19360 |
检验恒等式 |
cos(4x)+cos(2x)=2-2sin(2x)^2-2sin(x)^2 |
|
| 19361 |
检验恒等式 |
cos(40)=5/r |
|
| 19362 |
检验恒等式 |
cos(3x)=1 |
|
| 19363 |
检验恒等式 |
cos(2x)cos(x)-2sin(2x)sin(x)=0 |
|
| 19364 |
检验恒等式 |
cos(3x)=cos(x)(cos(2x)-2sin(x)^2) |
|
| 19365 |
检验恒等式 |
cos(90+x)=-sin(x) |
|
| 19366 |
检验恒等式 |
cos(B)cot(B)=csc(B)-sin(B) |
|
| 19367 |
检验恒等式 |
cos(A+B)cos(A-B)=cos(A)^2-sin(B)^2 |
|
| 19368 |
检验恒等式 |
cos(a-b)=cos(a)cos(b)+sin(a)sin(b) |
|
| 19369 |
检验恒等式 |
cos(A-B)-cos(A+B)=2sin(a)sin(b) |
|
| 19370 |
检验恒等式 |
cos(a+b)*cos(a-b)=cos(b)^2-sin(a)^2 |
|
| 19371 |
检验恒等式 |
cos(a+b)+cos(a+b)=2cos(a)cos(b) |
|
| 19372 |
检验恒等式 |
cos(520)=cos(20) |
|
| 19373 |
检验恒等式 |
cos(2x)=2sin(x)cos(x) |
|
| 19374 |
检验恒等式 |
cos(2x)sin(5x)=1/2*(sin(7x)+sin(3x)) |
|
| 19375 |
检验恒等式 |
cos(2x)=1/2 |
|
| 19376 |
检验恒等式 |
cos(2x) = square root of 2-cos(2x) |
|
| 19377 |
检验恒等式 |
cos(2x)=0 |
|
| 19378 |
检验恒等式 |
cos(2x)=1-2sin(x)^2 |
|
| 19379 |
检验恒等式 |
cos(2x)=2cos(x-1)^2 |
|
| 19380 |
检验恒等式 |
cos(2x)=9sin(x)-4 |
|
| 19381 |
检验恒等式 |
cos(2a)=2cos(a)^2-1 |
|
| 19382 |
检验恒等式 |
cos(x)-sin(x)=1 |
|
| 19383 |
检验恒等式 |
cos((7pi)/4+x)+sin((5pi)/4+x)=0 |
|
| 19384 |
检验恒等式 |
cos((3pi)/2+x)=-cos(x) |
|
| 19385 |
检验恒等式 |
cos(-x)=-cos(x) |
|
| 19386 |
检验恒等式 |
cos(pi/2-x)cos(-x)=(sin(2x))/2 |
|
| 19387 |
检验恒等式 |
cos(0)=sin(0)cot(0) |
|
| 19388 |
检验恒等式 |
cos(180+x)=-cos(x) |
|
| 19389 |
检验恒等式 |
cos(180-x)=-cos(x) |
|
| 19390 |
检验恒等式 |
cos(x)=-0.744 |
|
| 19391 |
检验恒等式 |
cos(x)=0 |
|
| 19392 |
检验恒等式 |
cos(-x)-sin(-x)=cos(x)+sin(x) |
|
| 19393 |
检验恒等式 |
cos(x-(5pi)/4)=-( 2)/2*(cos(x)+sin(x)) 的平方根 |
|
| 19394 |
检验恒等式 |
cos(x)tan(x)=cos(x) |
|
| 19395 |
检验恒等式 |
cos(x+pi)=cos(x) |
|
| 19396 |
检验恒等式 |
cos(x+y)*cos(x-y)=cos(x)^2-sin(y)^2 |
|
| 19397 |
检验恒等式 |
cos(x+y)=cos(x)+cos(y) |
|
| 19398 |
检验恒等式 |
cos(x+pi/4)+cos(x-pi/4) = square root of 2cos(x) |
|
| 19399 |
检验恒等式 |
cot(x)=(sin(2x))/(1-cos(2x)) |
|
| 19400 |
检验恒等式 |
cos(y)cos(x-y)-sin(y)sin(x-y)=cos(x) |
|