• Cos a=12/3 then find sin a tan a sec a

Asked by bollamramesh98 | 26th Sep, 2019, 08:52: PM

Expert Answer:

The question should be like this 
In triangle ABC, Cos A = 12/13 then find sin A tan A sec A
Cos A = 12/13 then sec A = 13/12
Using Pythagoras in triangle ABC
AB2 + BC2 = AC2 
122 + BC2 = 132 
BC = 5 
sin A = 5/13, tan A = 5/12

Answered by Sneha shidid | 27th Sep, 2019, 09:36: AM