ch 8 class 10
tell me immediately please...
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Answer:
90 is correct answer like me
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Answer:
sec²∅
Step-by-step explanation:
cot(90°-∅)/tan∅ + cosec(90°-∅) sin∅ / tan(90°-∅)
= tan∅/tan∅ + sec∅ sin∅ / cot∅
= 1 + sin∅×sin∅/cos∅ × cos∅
= 1 + sin²∅ / cos²∅
= (cos²∅ + sin²∅) / cos²∅
= 1/cos²∅
= sec²∅
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