2015年11月9日 · You will need to use a trigonometry calculator. The sine function is positive in the first and second quadrants, so we can conclude that sin x will lie between 0 and 180 …

2017年4月22日 · cos t = - 20/29 sin^2 t = 1 - cos^2 t = 1 - 400/841 = 441/841 sin t = 21/29 (sin t positive because t is in Quadrant 2) tan t = sin/(cos) = - 21/20 cot = - 20/21 sec t = 1/(cos) = - …

2017年4月25日 · cos^2 t = 1 - sin^2 t = 1 - 400/841 = 441/841 cos t = +- 21/29 Since t is in Quadrant 3, cos t is negative. cos t = - 21/19 tan t = sin/(cos) = (-20/29)(-29/21) = 20/21 cot t = …

2016年8月18日 · sin(28^@) approx 0.46977 We know that sin(30^@)=0.5 then using the Taylor expansion we have f(x) = f(x_0 ...

2016年5月9日 · sin(cos^(-1)(x)) = sqrt(1-x^2) Let's draw a right triangle with an angle of a = cos^(-1)(x). As we know cos(a) = x = x/1 we can label the adjacent leg as x and the hypotenuse as …

2016年8月20日 · x=(43sin(29))/sin110 x~~22.185 to 3 decimal places Turn upside down: x/sin(29)=43/sin(110) Cross multiply: x=(43sin(29))/sin110 x~~22.185 to 3 decimal places

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2016年3月13日 · It is int (sinx)/(cos^2x) dx= int [1/cosx]'dx=1/cosx+c=secx+c

2015年5月22日 · cos^4x-sin^4x = (cos^2x)^2-(sin^2x)^2 = (cos^2x-sin^2x)(cos^2x+sin^2x) = (cos^2x-sin^2x)xx1 = (cos^2x-sin^2x) based on the identities: (a^2-b^2) = (a-b)(a+b) …

Examples of trig inequalities #f(x) = sin 2x + cos x > 0# # f(x) = sin x + sin 2x + sin 3x < 0# Use trig Transformation Identities to transform these above trig expressions into trig basic …