Why does sine squared plus cosine squared equal 1?

sin square theta + cos square theta = 1 How to prove?

What does sine actually mean?

If π/2 ≤x≤3π/2 , then √(1-sin x)/ (1+sin x) is equal to? Rd sharma MCQ 11th Trigonometric functions

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Q41 | Prove that 1 upon 1 + sin theta plus 1 upon 1 - sin theta = 2 sec square theta | 1/1+sin⁡θ + 1

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Q235 | Prove that: 1 + sin theta whole square + 1 - sin theta whole square / cos square theta

Integral of root(1-sin2x) | #shorts #maths #integral #calculus

Prove: sin^2theta + cos^2theta = 1 | Trigonometric Identities | Class 10 Maths

Find the indefinite integral of sqrt[1 + sin(x/2)].

Q20 | Prove that cot square theta - 1 by sin square theta = -1 | prove that cot^2⁡θ - 1/sin^2⁡θ = -1

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root (1+ sin A) / (1- sin A) = sec A + tan A | Trigonometry class 10

`(1-sin^2theta)sec^2theta=1`