Question

If tan2A + Cot2A = 2, A is an acute angle, then find the value of tan3A + Cot3A.
Class 10 CBSE
Introduction To Trigonometry

Answer 1

Answer:

Applying Pythagoras theorem for ΔABC, we obtain

AC2 = AB2 + BC2

= (24 cm)2 + (7 cm)2

= (576 + 49) cm2

= 625 cm2

∴ AC = cm = 25 cm

(i) sin A =

cos A =

(ii)

sin C =

cos C =