How to find cos and sin only having tan. How to find sin only having cos and tan How to find cos only having sin and tan

Question

asked Apr 16, 2024 138k views

1 Answer

Shachilies · Answer 1 · 2024-04-22T20:20:04+0000

Answer: I know that: tan(α)=1/2

.How can I get clean values for sine / cosine without the calculator?

Is there a relationship?

I know that sin(arctan(1/2))

is a way ... But I hope you get the point.