Question
Download Solution PDFThe following expression is equal to.
cot 85°+ cos 75°
Answer (Detailed Solution Below)
Detailed Solution
Download Solution PDFFormula used:
sin(90-θ) = cos θ
cot(90-θ) = tan θ
Calculation
⇒ cot 85°+ cos 75°
⇒ cot (90 - 5)°+ cos (90 - 15)°
⇒ cot (90 - 5)°+ cos (90 - 15)°
⇒ tan 5°+ sin 15°
The answer is tan 5°+ sin 15°.
Last updated on Jul 8, 2025
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