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To differentiate we must use implicit differentiation. So: siny=x .Differentiating both sides we get (dy/dx)cosy=1, so (dy/dx)=1/cosy . Using the common identity ...
Remember that the equation of a straight line function is: ax+c. a= change of y/ change of xThe steps to follow are:1- find the gradient of the slope2- replace the equation by values coming from any...
All interior angles in a quadrilateral add up to 360 degrees. Adding up what we know so far 60 + 75 + 105 = 240. So the fourth angle must be 360 - 240 which equals 120 degrees.
We start by noticing that both the numerator and denominator are expressions which can be factorised into brackets. Starting with the numerator, we multiply the coefficient of x^2 and the constant term to...
Write the 2 equations above each other: 3x-y=23 2x+3y=8First we want to remove the y terms to be able to find out x, so multiply the top equation by 3 9x-3y=69 2x+3y=8Now that we have -3y on the top and -...
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