Page 92 - Math SL HB Sem 1

CIRCUI,AR FUNC'IIONS AND TRIGONOMETRY

Use your results to complete:
If 0o<A<90o or 0<0 <L
2'
sin (180 - 0)':sin{7"-0)

cos(180 - 0)'= cos( tr -0)

tan(I80 - 0)'= tan(r-0)

Thc third quadrant (reflex angles)

Using the unit circle, we have:
:
sin 225o sin . .... . (in radians)

sin 45o - sin. .. .. ..
:
cos 2250 cos..... . (in radians)

:
cos 45o cos.......

Use your results to complete:
If 0o< d <90o or O<0<L
2'
:
sin (180 + 0)o sin (r+0)

cos(180 + P)o = gos(it+Q)

tan( I tlo + 0)" - ttit( tr + 0')

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