Given: (alpha) is in quadrant 2 and sin(alpha)=(5/13); (beta) is in quadrant 4 and cos(beta)=(7/25). How do I find cos(alpha), tan(alpha), sin(beta), and tan(beta)??
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1 Answer

if sine(alfa)=5/13, take the INVERS sine(5/13)

=invers sine(0.38461538461538463)

=22.6198649476 deg

But if yu want quadrant 2, yu want 180 deg -22.619865 deg

=157.3801351 deg
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