Question

The value of tan(–405°) is :

A. 1

B. –1

C. ∞

D. 0

• A. D
• B. B
• C. A
• D. C

Answer 1

Answer:

B. B

Solution: Formula: tan(–ϴ) = – tan ϴ and tan (360° + ϴ) = tan ϴ ∴ tan(–405°) = – tan 405° = – tan(360° + 45°) = – tan 45° = – 1