Question

the value of sin2(45°) +2tan2(45°) - sec2(45°) = ​

Answer 1

sin^2(45) + 2tan^2(45) - sec^2(45)

= (1/√2)^2 + 2(1)^2 - (√2)^2

= 1/2 + 2 - 2

= 1/2

= 0.5

Hence, the answer is 1/2 or 0.5

Trigonometric Ratios Used:

• sin(45) = 1/√2
• tan(45) = 1
• sec(45) = √2