हिंदी

Without using trigonometric tables, prove that: tan 71° – cot 19° = 0

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प्रश्न

Without using trigonometric tables, prove that:

tan 71° – cot 19° = 0

प्रमेय
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उत्तर

LHS = tan 71° − cot 19° 

= `tan (90^circ - 19^circ) - cot 19^circ`

= `cot 19^circ - cot 19^circ`

= 0 
= RHS

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अध्याय 12: Trigonometric Ratios of Some Complemantary Angles - EXERCISE 12 [पृष्ठ ५९०]

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आर.एस. अग्रवाल Mathematics [English] Class 10
अध्याय 12 Trigonometric Ratios of Some Complemantary Angles
EXERCISE 12 | Q 2. (ii) | पृष्ठ ५९०
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