Question

Explain Value Of Sec(-75°) = ?

Answer 1

Hey dear here is ur answer ******
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sec(-75°)

=sec75°

=sec(45°+30°)

=1/cos(45°+30°)

=1/(cos45°×cos30°-sin45°×sin30°)

=1/(1/√2×√3/2-1/√2×1/2)

=1/(√3-2)/2√2

=2√2/√3-2

=2√2(√3+2)/(√3-2)(√3+2)

=-(2√6+2√4) [Ans.]

Hope it will help u@@@@@@@