Question

if sinx=cosx find 2 tanx.tanx+sinx.sinx-1

Answer 1

here is your answer..........

Answer 2

Answer:

if

sinx = cosx

sinx/cosx = 1

i:e tanx = 1

therefore we can say x = 45deg.

2.tanx.tanx+sinx.sinx-1=

= 2*1*1+sin(45).sin(45) - 1

= 2 + [(1/√2)*(1/√2)] -1

= 1 + 1/2

= 3/2