Question

sin+cos=p find p2-1​

Answer 1

hey mate

here is the answer....

Answer:

sin @+cos @=p

[squaring both sides]

(sin @+cos @)²=(p)²

=>sin² @+cos ² @+2.sin @.cos @=p²

=>1+2.sin @.cos @=p²

=>p²-1=2.sin @.cos @

[found]

Answer 2

Answer:

P²-1

=(sin@+cos@)²-1

=sin²@+cos²@+2sin@cos@-1

=1+2sin@cos@-1

=2sin@cos@

Hope it helps u....^_^