Question

Sin2 75° - sin2 15°​

Answer 1

Answer:

hi

Step-by-step explanation:

cos^2 (90°- 75) - cos^2 ( 90° - 15)

90°- 15 - 90°+ 15

0

Answer 2

$\huge \bold \color{red}{ \boxed{Question}}$

Q-: Sin² 75° - sin² 15°

$\huge \bold \color{blue}{ \boxed{Answer}}$

Here we will be applying identity sin² A - sin²B = sin (A+B) sin(A-B)

$\bold\color{brown}{=>sin² 75° - sin²15°</p><p>}$

$\bold\color{brown}{=> sin ( 75°+15°) sin ( 75° - 15°)}$

$</p><p>\bold\color{brown}{=>sin 90° sin 60°}$

$</p><p>\bold\color{brown}{=>(1) (√ 3/2)}$

$\bold\color{brown}{=>√ 3/2}$

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I hope it will help you please give thanks