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Recent questions tagged trigonometric-functions

apply a sum or defference identity to find the exact function value of cos(13pi/12)

asked Apr 1, 2016 in PRECALCULUS by anonymous

find the exact value of sin u/2 given cos u = 12/13, where 0<u<pi/2

asked Apr 1, 2016 in PRECALCULUS by anonymous

Question

asked Dec 4, 2015 in TRIGONOMETRY by anonymous

Graphing the Cosine Function Help?

asked Nov 9, 2015 in GEOMETRY by dneesy Rookie

Prove cos^2(45 degrees+x)-sin^2(45degrees+x)= -sin2x?

asked Aug 22, 2015 in TRIGONOMETRY by anonymous

Suppose sin ß=(1/3) where (π/2) <= ß<=π and cos ø =(4/5) where ((3π)/2)<=ø<=2π?

asked Aug 22, 2015 in TRIGONOMETRY by anonymous

How do we prove that

asked Aug 10, 2015 in TRIGONOMETRY by anonymous

sin(x+pi/4)=0.5

asked May 31, 2015 in TRIGONOMETRY by anonymous

If secxsinx=2,

asked Mar 11, 2015 in PRECALCULUS by anonymous

Help with simplifying a trigonometric expression?

asked Mar 10, 2015 in TRIGONOMETRY by anonymous

Trig problem?

asked Mar 10, 2015 in TRIGONOMETRY by anonymous

If g is a twice differentiable function and f(x) = x^ 2g(x^2 + 1) , find f ′′ in terms of x, g, g ′ , and g ′′ .

asked Feb 19, 2015 in CALCULUS by anonymous

Can someone help me with these trig problems?

asked Feb 11, 2015 in TRIGONOMETRY by anonymous

Find the exact values of the sine, cosine, and tangent of the angle. 1) 195 degrees and 2) 7pi/12?

asked Feb 11, 2015 in TRIGONOMETRY by anonymous

Find the value of the expression.

asked Feb 11, 2015 in TRIGONOMETRY by anonymous

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