Question

how to find the angel in trigonometry when all the lengths of the right angled triangle already given.

Answer 1

The three trigonometric ratios can be used to calculate the size of an angle in a right-angled triangle

Use rule ; SOHCAHTOA .Where sin x = opp/hyp

cos x = adj/hyp

tan x= opp/adj

Substitute the given values for the three sides

into any of the above rules

`example = Hyp = 2\\opp = 1\\sin- x = 1/2\\x = sin^(-1) 1/2\\x = 30`

Explanation:

I Hope It Helps :)