sin260° + cos230° - sin245° - 3sin290° യുടെ മൂല്യം കണ്ടെത്തുക 

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SSC CGL 2020 Tier-I Official Paper 20 (Held On : 24 Aug 2021 Shift 2)
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  1. -2

Answer (Detailed Solution Below)

Option 4 : -2
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SSC CGL Tier 1 2025 Full Test - 01
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നൽകിയിരിക്കുന്നത്:

sin260° + cos230° - sin245° - 3sin290°

ഉപയോഗിച്ച ആശയം:

കണക്കുകൂട്ടൽ:

sin260° + cos230° - sin245° - 3sin290°

⇒ (√3/2)2 + (√3/2)2 - (1/√2)2 - {3 × (1)2}

⇒ 3/4 + 3/4 - 1/2 - 3

⇒ 3/2 - 1/2 - 3

⇒ (-2)

∴ sin260° + cos230° - sin245° - 3sin290° ന്റെ ആവശ്യമായ മൂല്യം  (-2) ആണ്.

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