[Math] Learning $\arcsin, \arccos, \arctan$ – how to

analysisinverse functiontrigonometry

Sorry for asking such question.

I have a very basic understanding of $\arcsin, \arccos, \arctan$ functions. I do know how their graph looks like and not much more beyond that.

Calculate:
Tasks

Which specific keywords should I google to learn how to solve the following tasks? I think those aren't equations (googling 'cyclometric equations' was a dead end). Perhaps you would like to share with some link to a beginner-friendly learning source?

Thank you.

Best Answer

Some good reference as summary from Wikipedia are

and also

Some exercises given requires only to calculate the value for the functions at some point, other else are more tricky and you need to acquire a deeply understanding of the matter.

Refer also to the related

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