Question

Find the value of cos theta , given that sin theta = a/b.​

Answer 1

Step-by-step explanation:

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Answer 2

Answer:

Hey mate ☺️

If sin theta =a/b

Then, sinθ=a/b

∴, cosθ=√(1-sin²θ) [∵, sin²θ+cos²θ=1]

or, cosθ=√(1-a²/b²)

or, cosθ=√{(b²-a²)/b²}

or, cosθ=√(b²-a²)/b

Hope it helps you ☺️✌️✌️