The first thing to recognize is that we can find cosine via sin^2(theta) + cos^2(theta) = 1 implies costheta = pm sqrt(1 - sin^2theta) = pm 6/7 The problem gives us that cosine is positive, so …

How do we find angle of like negative integer is there like cosx=-1/3 normally for positive cosx we take angle in first and fourth quadrant but what if it is like I wrote above negative And how to …

So, we need to find this function's second derivative and then examine when it's positive (the function is convex) and when the second derivative is negative (the function is concave).

How do you find the exact functional value sin (arcsin3/5 + arccos3/5) using the cosine sum or difference identity?

Recall that the cosine value of an angle in the second quadrant is always negative. Then, using the identity #sin^2 (theta)+cos^2 (theta)=1# and remembering that #cos (A)# is negative, we have

To make the numbers easier to handle I will normalise the forces in units of #sf (K)# where #sf (K=kxx10^ (-10)" "N)# Now we have a Side Angle Side triangle. We know 2 sides and the …

Find the exact value of: csc^2 (17pi/4) How do I do problems with the sin, cos, tan...etc raised to the power of 2? Find the exact value of sin^3 3645° Do I go around the circle 10 times? is …

Jun 20, 2017 · The cosine of the angle is adjacent over hypotenuse: cos (arcsin (3/5)) = 4/5. Now 1 + 4/5 = 9/5. Dividing 9/5 by 2 gives 9/10. This is the radicand. Back to the half-angle formula, …

=26 Area of Parallelogram =24=ab sintheta where a=14 and b=12 or 24=14times12timessintheta or sin theta=24/14times1/12 or sin theta=1/7 or theta=sin^-1(1/7) or theta=8.2 To find the …

Explanation: The power reduction formulas come from the formulas for #cos (2x)# which come from the formula for the cosine of a sum.