What does “Range of sine and cosine” actually mean in Trigonometry, and why does it matter for JEE?
sinθ and cosθ always lie between −1 and 1.
In simple words: sinθ and cosθ always lie between −1 and 1. Getting Range of sine and cosine clear matters because JEE questions on Trigonometry usually test this idea directly, not just a formula you memorised.
Key point
Range of sine and cosine
Common mistake
accepting an answer where sinθ > 1.
Memory tip
if a step gives sinθ = 1.4, you've made an error somewhere.
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