Question

Prove that : cos? 0(1+tan? 0)=1


anyone knows bhojpuri well ??

​

Answer 1

Given→

A equation

To prove→

cos²0 (1+tan²0) = 1

Solution→

LHS= cos²0(1+tan²0)

By using identity, 1+tan²A=sec²A

= cos²0(sec²0)

We know that, cosA= 1/secA

=( 1/sec²0)× (sec²0)

= 1

= RHS

Hence proved.

→Hamani ke neikhen awela bhojpuri