Question

11) Find the value of sin2 75° + cos2 75
​

Answer 1

Step-by-step explanation:

Sin²75° + Cos²75°

(Sin²O + Cos²O = 1 )

= 1

Answer 2

Answer:

The value of sin²75°+cos²75°=1  

Step-by-step explanation:

Trigonometric identities:

• Trigonometric identities are equality statements that hold true for all values of the variables in the equation and incorporate trigonometric functions.
• There are numerous distinctive trigonometric identities that relate a triangle's side length and angle.
• Only the right-angled triangle is an exception to the trigonometric identities.
• The six trigonometric ratios are the source of all fundamental trigonometric identities. Sine, cosine, tangent, cosecant, secant, and cotangent are some of their names.
• The adjacent side, opposite side, and hypotenuse side of the right triangle are used to define each of these trigonometric ratios.

The Pythagorean trigonometric identities are

        sin²θ+cos²θ=1

         sec²θ-tan²θ=1

     cosec²θ-cot²θ=1

   So, according to the first identity we can say

            sin²75°+cos²75°=1

Know more about Trigonometry:

https://brainly.in/question/5488061?referrer=searchResults