Question

The value of sin^2 48° + sin^2 42°​

Answer 1

Answer:

sin²48°+sin²42°=1

Step-by-step explanation:

sin²48° + sin²(90°- 48°) = sin²48° + cos²48° = 1

used identities :-

sin²a + cos ²a = 1

sin (90° - x) = cos x

Answer 2

Answer:

sin^2 48° + sin^2 42° = 1

Step-by-step explanation:

sin 48° = 0.7431448255

Therefore,

sin^2 48° = 0.7431448255^2

sin^2 48° = 0.5522642316

Same goes with sin^2 42°​

sin 42°​ = 0.6691306064

Therefore,

sin^2 42° = 0.6691306064^2

sin^2 42° = 0.4477357684

sin^2 48° + sin^2 42° = 0.5522642316 + 0.4477357684 = 1

Hope this helps!