The value of (sec245 - cot245) - (sin230 + sin260) is
A) 1 B) 2√3 C) 0 D) 1/√2
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Answer:
C) 0
Step-by-step explanation:
(sec²45° - cot²45°) - (sin²30° + sin²60°)
⇒(√2² - 1²) - ((1/2)² + (√3/2)²
⇒(2-1) - (1/4 + 3/4)
⇒(1) - (4/4)
⇒1 - 1
⇒0
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