5) find the value of iii) sec^2 60° - tan^2 60° . with solution
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5) find the value of iii) sec^2 60° - tan^2 60° . with solution
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Answer:
answer - → 1 .
method 1.
since,
sec²∅ - tan²∅ = 1
so,
sec ²60° - tan²60° = 1
as,
∅ = 60°.
Step-by-step explanation:
method 2..
since sec60° = 2
and tan30° = √3
so,
sec²60^ - tan²60°
= 2² - {√3} ²
= 4 -3
= 1..
I hope it will help you..