Question

(sin²a)²-(cos²a)²+1/sin²a=?​

Answer 1

Step-by-step explanation:

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Answer 2

mathematics, trigonometric identities are equalities where we would have trigonometric functions and they would be true for every value of the occurring variables. Geometrically, these are identities involving certain functions of one or more angles.

Trigonometric Identities - SOHCAHTOA

Sin θ = Opposite side / Hypotenuse side

Cos θ = Adjacent side / Hypotenuse side

Tan θ = Opposite side / Adjacent side

Csc θ = Hypotenuse side / Opposite side

Sec θ = Hypotenuse side / Adjacent side

Cot θ = Adjacent side / Opposite side

Reciprocal Trigonometric Identities

Sinθ = 1 / Cosecθ

Cscθ = 1 / Sinθ

Cosθ = 1 / Secθ

Secθ = 1 / Cosθ

Tanθ = 1 / Cotθ

Cotθ = 1 / Tanθ

Other Trigonometric Identities

Sin²θ + Cos²θ = 1

Sin²θ = 1 - Cos²θ

Cos²θ = 1 - Sin²θ

Sec²θ - Tan²θ = 1

Sec²θ = 1 + Tan²θ

Tan²θ = Sec²θ - 1

Csc²θ - Cot²θ = 1

Csc²θ = 1 + Cot²θ

Cot²θ = Csc²θ - 1

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