Trignometry
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Trigonometry
A calculator is broken so that the only keys that still work are the sin, cos, tan, cot, sin^1, cos^1, and tan^1 buttons. The display initially shows 0. In this problem, we will prove that given any positive rational number q,
asked by Sam on October 31, 2013 
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Posted by hayden on Monday, February 23, 2009 at 4:05pm. sin^6 x + cos^6 x=1  (3/4)sin^2 2x work on one side only! Responses Trig please help!  Reiny, Monday, February 23, 2009 at 4:27pm LS looks like the sum of cubes sin^6 x +
asked by hayden on February 23, 2009 
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Suppose that the multiplication and division keys on your calculator were broken. Explain how you can calculate 452 x14 by using other keys on the calculator.
asked by rachael on February 11, 2010 
Trigonometry
Solve the equation for solutions in the interval 0
asked by Renee on March 7, 2016 
tigonometry
expres the following as sums and differences of sines or cosines cos8t * sin2t sin(a+b) = sin(a)cos(b) + cos(a)sin(b) replacing by by b and using that cos(b)= cos(b) sin(b)= sin(b) gives: sin(ab) = sin(a)cos(b)  cos(a)sin(b)
asked by Pablo on November 26, 2006 
Math
Roger knows how many keys a piano has. He knows that some of the keys are broken. How can he find the number of keys that work
asked by Ryan on September 18, 2012 
Math
Roger knows how many keys a piano has. He knows that some of the keys are broken. How can he find the number of keys that work?
asked by Justin on January 23, 2013 
algebra
Can someone please help me do this problem? That would be great! Simplify the expression: sin theta + cos theta * cot theta I'll use A for theta. Cot A = sin A / cos A Therefore: sin A + (cos A * sin A / cos A) = sin A + sin A = 2
asked by Valerie on February 18, 2007 
math
the inverse cosine of negative 0.947 Put it in your calculator... The sequence of keys in my old ten dollar calculator is .947 + 2nd COS Other calculators have different keys strokes. If you want to be neat, type this into a
asked by latoya on November 3, 2006 
Math
Evaluate *Note  We have to find the exact value of these. That I know to do. For example sin5π/12 will be broken into sin (π/6) + (π/4) So... sin 5π/12 sin (π/6) + (π/4) sin π/6 cos π/4 + cos π/6 sin π/4 I get all those
asked by Anonymous on November 25, 2007