Wiki User
∙ 10y agoMultiply both sides by sin(1-cos) and you lose the denominators and get (sin squared) minus 1+cos times 1-cos.
Then multiply out (i.e. expand) 1+cos times 1-cos, which will of course give the difference of two squares: 1 - (cos squared). (because the cross terms cancel out.)
(This is diff of 2 squares because 1 is the square of 1.)
And so you get (sin squared) - (1 - (cos squared)) = (sin squared) + (cos squared) - 1.
Then from basic trig we know that (sin squared) + (cos squared) = 1, so this is 0.
Wiki User
∙ 10y agoSecant is 1 over cosine and cosine 0 equals 1.
Unfortunately, 2 over 2 minus 1 equals 5 over 6 is just a wrong answer! If it is 2 over 2, minus 1, the answer is that it equals zero. If it is 2, over 2 minus 1, the answer is that it equals 2.
A way of remembering how to compute the sine, cosine, and tangent of an angle. SOH stands for Sine equals Opposite over Hypotenuse. CAH stands for Cosine equals Adjacent over Hypotenuse. TOA stands for Tangent equals Opposite over Adjacent.
Approx 44.4 degrees.
5 over 8
6/11 minus 5/6 equals -19/66
2/5 minus 4/9 equals -2/45
The answer is 8/36 minus 3/14 equals 1/126
4/9 minus 3/4 equals -11/36
2 minus 5/2 equals -1/2
3/2 minus 2 equals -1/2
...7 over 36?