Question

Evaluate cosec 39°. sec 51°- tan 51°. cot 39°

Answer 1

Answer:

Step-by-step explanation:

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Answer 2

★${\green{\underline{\underline{\huge{\mathbb{SOLUTION:-}}}}}}$

cosec39°.sc51°-tan51°.cot39°

→cosec(90°-51°).sc51°-tan51°.cot(90°-51°)

→ sc51°.sc51°- tan51°.tan51°

→ sc²51° - tan²51°

→ 1

$\tt\boxed{sec=sc}$