Homework Help: simple trig

Posted by jen on Thursday, January 8, 2009 at 4:22pm.

If sin(theta)=[sqrt(70)]/7 and theta is in Quadrant two, find the exact numerical value of tan theta without using a calculator.

I got tan(theta)=[sqrt(294)]/42

Is that right?

if sin(theta)=-a where 0<a<1, and theta is in quadrant 3, find the exact algebraic expressionm for cos(theta)

simple trig - Reiny, Thursday, January 8, 2009 at 4:27pm
You said
sin(theta)=[sqrt(70)]/7
that would make
sin(theta) > 1 which is not possible

check your typing

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