Question
Download Solution PDFखालील पदावलीचे मूल्यमापन करा.
sin 25° sin 65° – cos 25° cos 65°.
Answer (Detailed Solution Below)
Detailed Solution
Download Solution PDFसंकल्पना:
sin(90 - a) = cos a
Cos(90 - a) = sin a
गणना
sin 25° sin 65° – cos 25° cos 65°
⇒ sin 25° sin (90 - 25)° – cos 25° cos (90 - 25)°
⇒ sin 25° cos 25° – cos 25° sin 25°
⇒ 0
मूल्य 0 आहे.
Last updated on Jul 22, 2025
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