cos sin tan calculator

Press and check that your calculator is set to DEGREE mode The keys for the three trigonometric functions—sine, cosine, and tangent—are , , and (If 

EXACT TRIG VALUES – Non-calculator Cosine State the value of cosine for 0⁰ 30⁰ 45⁰ 60⁰ 90⁰ Work out the exact 20 cos 30° + 4 sin 60° - 2 tan 60°

Using the sin-1, cos-1, and tan-1 buttons on your calculator, calculate the value of 0 to the nearest hundredth 13 68 2 03 35 Use trigonometric ratios to solve for 

The six functions are sine (sin), cosine (cos), tangent (tan), cosecant (csc), secant (sec), and cotangent (cot) Below you will see the ratios formed by these 

(b) Use the sin, cos and tan keys on your calculator to check your values Angle sine cosine tangent 10 ° 20 ° 30 °

Each of these functions are derived in some way from sine and cosine The tangent of x is defined to be its sine divided by its cosine: tan x = sin x cos x

sin 1 y y θ = = 1 csc y θ = cos 1 x x θ = = 1 sec x θ = tan y x θ = cot x y θ = Formulas and Identities Tangent and Cotangent Identities sin cos tan cot cos sin θ θ

Example 1 Find Sine, Cosine, and Tangent Ratios Find sin A, cos A, tan A, sin B, Use a calculator to find each value to the nearest ten thousandth a cos 48°

The inverse of the restricted cosine function y= cos x, 0 < x < π, is y= cos -1 x and y = arccos x Solving Inverse Tangent Problem Without Calculator Example