Trigonometry (3) Flashcards
1
Q
What is cosec pheta?
A
1/sin pheta
2
Q
1/sin pheta
A
What is cosec pheta?
3
Q
What is sec pheta?
A
1/cos pheta
4
Q
1/cos pheta
A
What is sec pheta?
5
Q
What is cot pheta?
A
1/tan pheta
6
Q
1/tan pheta
A
What is cot pheta?
7
Q
What is sin^2 pheta + cos^2 pheta?
A
1
8
Q
1
A
What is sin^2 pheta + cos^2 pheta?
9
Q
What is sec^2 pheta?
A
1 + tan^2 pheta
10
Q
1 + tan^2 pheta
A
What is sec^2 pheta?
11
Q
What is cosec^2 pheta?
A
1 + cot^2 pheta
12
Q
1 + cot^2 pheta
A
What is cosec^2 pheta?
13
Q
What is sin pheta?
A
pheta
14
Q
pheta
A
What is sin pheta?
15
Q
What is tan pheta?
A
pheta
16
Q
pheta
A
What is tan pheta?
17
Q
What is cos pheta?
A
1 - (1/2) pheta^2
18
Q
1 - (1/2) pheta^2
A
What is cos pheta?
19
Q
What is cot x also equivalent to?
A
cosx/sinx
20
Q
cosx/sinx
A
What is cot x also equivalent to?
21
Q
Find an expression for sin3x in terms of sinx only?
A
sin(2x+x) = sin2xcosx + cos2xsinx (2sinxcosx)cosx + (1-2sin^2x)sinx 2sinxcos^2x + sinx - 2sin^3x 2sinx(1-sin^2x) + sinx - 2sin^3x 2sinx - 2sin^3x + sinx - 2sin^3x 3sinx - 4sin^3x
