Oct 20, 2017 · What is the value of #sin -45^@#? How do you find the trigonometric functions of values that are greater than #360^@#? How do you use the reference angles to find …

What is the exact value of sin(75) degrees sin75º=sin(30)º+45º) =sin 30 cos 45+cos 30 sin 45

Jul 4, 2017 · This depends on the calculator type, I think if you have a graphics calculator, press shift ==> sin and put 0.75. Say the calculator is on degrees mode, to change that to radius, …

csc660= 1/sin 660 note that 660 - 360 = 300 300 degrees is in the fourth quadrant and its reference angle is 360 - 300 = 60 degrees note that the sine function in quadrant 4 is negative …

cos^2(A) - sin^2(A) - 3*sin(A)*cos^2(A) + sin^3(A) = 0 if we replace cos^2(A) with its identical expression of 1 - sin^2(A), then we get: 1 - sin^2(A) - sin^2(A) - 3*sin(A)*(1-sin^2(A)) + …

Nov 6, 2015 · Solve sin x = cos (x + 50) Ans: x = 20^@ Apply the trig identity: cos x = sin (pi/2 - x), we get sin x ...

Jun 11, 2015 · Use calculator to evaluate theta = arccos(-1/3), allow for theta+pi (since cos(theta) = cos(theta+pi)); use calculator to evaluate the two values of theta (within the ...

You can put this solution on YOUR website! By the law of sines, Let those three fractions equal to a constant k, Then we have VW = k*sin(U), UW = k*sin(V), UV = k*sin(W) Draw altitude WX …

Jun 27, 2016 · How do you use a double-angle identity to find the exact value of sin 120°? How do you use double angle identities to solve equations? How do you find all solutions for #sin 2x = …

Dec 20, 2016 · When we have a function of #x# like #y=x^sin x#, where a single term contains #x# in both its base and its power, perhaps the easiest way to find the function's derivative is …