Trigonometry Flashcards
1
Q
Sin a + b
A
Sin a cos b + cos a sin b
2
Q
Sin A - B
A
Sin a cos b - cos a sin b
3
Q
Cos A + B
A
Cos a cos b - sin a sin b
4
Q
Cos A - B
A
Cos a cos b + sin a sin b
5
Q
Tan a + b
A
Tan A + tan B /1 - tan a. tan b
6
Q
Tan A-B
A
Tan A-B /1 + tan a tan b
7
Q
Cot a + b
A
cot a cot B -1 / cot A + cot b
8
Q
Cot a - b
A
Cot a cot b + 1 / cot B- cot A
9
Q
Sin 120
A
Sin 180 - 60
Sin 60
Root 3/ 2
Sin 90 + 30
Cos 30
Root 3 by 2
10
Q
180 and 360 same
270 and 90–>
A
Sin to cos
tan to cot
11
Q
Maxima and minima of a sin theta + b cos theta
A
Minima = - root (a^2 + b^2)
Maxima = root (a^2 + b^2)
12
Q
A sin theta plus minus b cos theta
A sin theta plus minus b sin theta
A cos theta + minus b cos theta
A
Plus or minus root a square + b square
13
Q
A tan theta + minus b cos theta
A
2 root (ab )for minimum
Maximum cant be determined
