Question

prove that sin90+ cos90=1

Answer 1

sin90°= 1
cos90°=0
sin90° + cos90°
1+0
1

Answer 2

to prove
sin90+ cos90=1
solution
L.H.S
sin90 + cos 90
using trigonometrical table of sin and cos we get,
----》the value of sin90 is = 1.----------(1)
----》the value of cos90 is = 0.--------(2)
using (1) and (2) we get,
=1 + 0
=1
=R.H.S
Hence proved