C H A P T E R 5 Analytic Trigonometry
C H A P T E R 5 Analytic Trigonometry
C H A P T E R 5 Analytic Trigonometry
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512 Chapter 5 <strong>Analytic</strong> <strong>Trigonometry</strong><br />
9.<br />
11.<br />
sin 2<br />
x <br />
2 2<br />
sin x 2<br />
2<br />
tan x <br />
sin x<br />
cos x <br />
cot x 1<br />
tan x 1<br />
sec x 1<br />
2<br />
cos x<br />
csc x 1<br />
sin x 2<br />
1 2<br />
⇒ cos x <br />
2 2<br />
1<br />
2<br />
1<br />
1<br />
2<br />
1<br />
cot2 1<br />
<br />
x 1 csc2 x sin2 x 12.<br />
10. csc<br />
is in Quadrant I.<br />
<br />
45<br />
sec 9, sin <br />
2 9<br />
<br />
cos 1 1<br />
<br />
sec 9<br />
tan <br />
sin <br />
cos <br />
45<br />
9<br />
1<br />
9<br />
45<br />
csc 1 9 95<br />
<br />
sin 45 20<br />
cot 1 1 5<br />
<br />
tan 45 20<br />
tan <br />
1 cos2 <br />
sin <br />
cos <br />
sin2 <br />
csc sec <br />
1<br />
sin cos <br />
13. tan 2 xcsc 2 x 1 tan 2 xcot 2 x tan 2 x 1<br />
tan 2 x 1 14. cot2 xsin 2 x cos2 x<br />
sin 2 x sin2 x cos 2 x<br />
15.<br />
sin <br />
2 cos <br />
cot <br />
sin sin <br />
17. cos2 x cos2 x cot2 x cos2 x1 cot2 x cos2 xcsc2 x<br />
19.<br />
cos 2 x 1<br />
sin 2 x cos2 x<br />
sin 2 x cot2 x<br />
tan x 1 2 cos x tan 2 x 2 tan x 1 cos x<br />
sec 2 x 2 tan x cos x<br />
16.<br />
18.<br />
sec2 sin x<br />
x cos x 2 cos x sec x 2 sin x<br />
cos x<br />
20. sec x tan x2 sec2 x 2 sec x tan x tan2 x 21.<br />
22.<br />
1 tan 2 x 2 sec x tan x tan 2 x<br />
1 2 sec x tan x 2 tan 2 x<br />
cos2 x<br />
1 sin x cos2 x 1 sin x<br />
<br />
1 sin x 1 sin x<br />
cos2 x1 sin x<br />
1 sin 2 x<br />
1 sin x<br />
23.<br />
cot <br />
2<br />
cos u<br />
u<br />
<br />
tan u<br />
tan u sec u<br />
cos u<br />
tan 2 csc 2 tan 2 tan 2 csc 2 1<br />
tan 2 cot 2 1<br />
1<br />
csc 1 <br />
1 csc 1 csc 1<br />
<br />
csc 1 csc 1csc 1<br />
<br />
<br />
2<br />
csc 2 1<br />
2<br />
cot 2 <br />
2 tan 2 <br />
csc 2 x csc x cot x 1<br />
sin 2 x 1<br />
1 cos x<br />
sin 2 x<br />
cos x<br />
sin xsin x