Trigonometry mainly provides six functions for sine (sin), cosine (cos), and tangent (tan), also its reciprocal functions cosecant (csc), secant (sec), and cotangent (cot). These processes help in solving angle and distance related problems in both 2D and 3D surroundings.

cos(π+a) = -cos(a) tgA=tanA = sinA/cosA . 万能公式. sin(a) = [2tan(a/2)] / {1+[tan(a/2)]²} cos(a) = {1-[tan(a/2)]^2} / {1+[tan(a/2)]²} tan(a) = [2tan(a/2)]/{1-[tan(a/2)]^2} 其它公式 . a•sin(a)+b•cos(a) = [√(a²+b²)]*sin(a+c) [其中，tan(c)=b/a] a•sin(a)-b•cos(a) = [√(a²+b²)]*cos(a-c) [其中，tan(c)=a/b]

为了在计算器上计算cos（x）： 输入输入角度。 在组合框中选择度数（°）或弧度（rad）的角度类型。 按 = 按钮计算结果。

Effortlessly find trigonometric function values (sin, cos, tan, cot) or solve for missing sides or angles in a right triangle using our remarkable tool crafted by experts.

Free math problem solver answers your trigonometry homework questions with step-by-step explanations.

Calculation with sin(angle deg|rad)/cos(angle deg|rad)/tan(angle deg|rad)/asin()/acos()/atan():

The value of cos (22.6) is 0.92321…

Free math problem solver answers your algebra, geometry, trigonometry, calculus, and statistics homework questions with step-by-step explanations, just like a math tutor.

2023年10月6日 · Enter real numbers in degrees or radians to find results of the six trigonometric functions: sine, cosine, tangent, cotangent, secant or cosecant. All 6 trigonometric functions graphed on an x scale from -7 to 7.

Use our cos(x) calculator to find the cosine of 22 degrees - cos(22 °) - or the cosine of any angle in degrees and in radians.