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Simplify the given question given trigonometry of complementary angles

Simplify the given question given trigonometry of complementary angles

Question Image
Grade:10

1 Answers

Arun
25763 Points
3 years ago
Dear student
May be yoh have types a wrong question as in numerator
Coesc² 65 - tan²25 ahould be there.
Anyway I am giving you the hint.
tan² 25 = tan² (90 -65) = cot² 65.
Sin²17 = sin² (90 - 73) = cos²73.
tan 80 = tan (90-10) = cot 10
Regards
Arun (askIITians forum expert)

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