Question

sec(-660) solve without using calci​

Answer 1

SOLUTION

TO DETERMINE

sec ( - 660° ) without using calculator

EVALUATION

sec ( - 660° )

= sec 660°

= sec ( 7 × 90° + 30° )

= cosec 30°

= 2

━━━━━━━━━━━━━━━━

Learn more from Brainly :-

$1.$ Find the value of cot (-3155°)

https://brainly.in/question/6963315

2. Sin11°19'cos18°41'+cos11°19'sin18°41'=?

https://brainly.in/question/20071857