Question

Is trigonometric ratios of some specific angles ( full excericse 8.2) removed for class 10 cbse?

Answer 1

Answer:

Tan C =P/B =AB/BC

Or Tan 300 = 5cm/BC

1/√3 = 5cm /BC (using table, tan 300 =1/√3).

Or BC = 5√3 cm.

Now we can find the third side by Pythagoras Theorem. We can also find third side using trigonometric identities.

Sin C = P/H = AB/AC

Or Sin 300 = 5cm/AC

Or 1/2 = 5cm /AC (using table, Sin 300 =1/2).

Or AC = 10 cm.

I hope it will help you ☺️