Question

Value of sin²45 + cos²45 - tan²45 is -

Answer 1

(1/√2)^2+(1/√2)^2-(1)^

1/2+1/2-1

2/2-1

taking LCM

2-2/2=0

answer-0

Answer 2

$Value \: of \: sin^{2} 45 + cos^{2} 45 - tan^{2} 45$

/* By Trigonometric Identity */

$\boxed{\pink{ sin^{2} A + cos^{2} A = 1 }}$

$= 1 - tan^{2} 45$

$= 1 - 1$

$= 0$

Therefore.,

$\red{ Value \: of \: sin^{2} 45 + cos^{2} 45 - tan^{2} 45}$

$\green {= 0}$

•••♪