Question

Tan²45-sin²30+cos²60-sec²30.

Answer 1

Answer:

Step-by-step explanation:

Answer 2

ANSWER...

Tan²45-sin²30+cos²60-sec²30

$( {1})^{2} - { (\frac{1}{2} })^{2} + { (\frac{1}{2} })^{2} - { (\frac{2}{ \sqrt{3} } })^{2}$
$1 - \frac{1}{4} + \frac{1}{4} - \frac{4}{3}$

$= 1 - \frac{4}{3}$
$= \frac{3 - 4}{3}$
$= \frac{ - 1}{3}$


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