Why are the cos-1 and sin-1 functions not working on my calculator? The answer always comes up as a math error and I don't know why. I'm definitely inputting everything right. -
Why are the cos-1 and sin-1 functions not working on my calculator? The answer always comes up as a math error and I don't know why. I'm definitely inputting everything right. -
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![View question - What is the difference between cos and cos-1, and how do I use the latter on a scientific calculator? View question - What is the difference between cos and cos-1, and how do I use the latter on a scientific calculator?](https://web2.0calc.com/img/question-preview-image/what-is-the-difference-between-cos-and-cos-1-and-how-do-i-use-the-latter-on-a-scientific-calculator.png)
View question - What is the difference between cos and cos-1, and how do I use the latter on a scientific calculator?
![Why are the cos-1 and sin-1 functions not working on my calculator? The answer always comes up as a math error and I don't know why. I'm definitely inputting everything right. - Why are the cos-1 and sin-1 functions not working on my calculator? The answer always comes up as a math error and I don't know why. I'm definitely inputting everything right. -](https://qph.cf2.quoracdn.net/main-qimg-29eb3b4e408ac0ef9de44ce64b3b86eb.webp)