Question
Download Solution PDFtan2α = \(\rm\frac{2 tan \alpha}{1-tan^{2}\alpha}\) नित्य समीकरण वापरून, tan 15° चे मूल्य तीन दशांश स्थानापर्यंत शोधा.
[√3 = 1.732 वापरा]
Answer (Detailed Solution Below)
Detailed Solution
Download Solution PDFदिलेले आहे
tan2α = \(\rm\frac{2 tan \alpha}{1-tan^{2}\alpha}\)
वापरलेले सूत्र:
Tan 15° = Tan(45 - 30)°
त्रिकोणमिती सूत्रानुसार, आपल्याला माहित आहे,
Tan (A – B) = (Tan A – Tan B) /(1 + Tan A Tan B)
गणना
म्हणून, आपण लिहू शकतो,
tan(45 – 30)° = tan 45° – tan 30°/1+ tan 45° tan 30°
आता सारणीमधून tan 45° आणि tan 30° चे मूल्य ठेवू;
tan(45 – 30)° = (1 – 1/√3)/ (1 + 1.1/√3)
tan (15°) = √3 – 1/ √3 + 1
= 1.732 - 1/1.732 + 1
= 0.732/2.732
= 0.268
म्हणून, tan(15°) चे मूल्य 0.268 आहे.
Last updated on Jun 13, 2025
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