You can also plot graphs for trigonometric equations (equations that use sine, cosine ... the ‘2 nd ’ button, which opens the second group of available buttons on the calculator.

frac{4^2 + 6.9^2 - 4.2^2}{2 \times 4 \times 6.9}\) \(\cos{y} = 0.8327898 \dotsc\). Do not round this answer yet. To calculate the angle use the inverse cos button on the calculator (\(\cos^{-1}\)).

just as you would find on a real physical scientific calculator. This mode provides all the buttons found in Basic mode, but it also adds memory, squaring, random, logarithmic, sine/cosine/tangent ...

Go ahead and grab your calculator. Make sure your calculator is in radians mode and then type in 7.07 and press the "cos" button. Yes, it's going to output something like 0.706104. But how does it ...

Try 2+2. Now, instead of simply coming up with the answer, Google presents you with a full, 34-button scientific calculator. Sine, cosines, tangents; all of that good stuff is in there.

This version is used to calculate lengths. Calculate the length BC. Give the answer to three significant figures. Use the form \(a^2 = b^2 + c^2 - 2bc \cos{A}\) to calculate the length. \(\text{BC} ...