Rev War Flashcards
1
Q
cos double angle
A
cos^2-sin^2
2
Q
sin double angle
A
2sincos
3
Q
Pythagorean tangent
A
1+tan^2=sec^2
4
Q
Pythagorean cotangent
A
1+cot^2=csc^2
cos double angle
cos^2-sin^2
sin double angle
2sincos
Pythagorean tangent
1+tan^2=sec^2
Pythagorean cotangent
1+cot^2=csc^2