find the value of ''3tan^2A-3sec^2A+3''
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Solution :
3tan²A - 3sec²A + 3
= 3( tan²A - sec²A ) + 3
= 3 ( -1 ) + 3
************************************
We know the Trigonometric identity:
1 + tan²A = sec²A
=> tan²A - sec²A = -1
***********************************
= -3 + 3
= 0
•••••
3tan²A - 3sec²A + 3
= 3( tan²A - sec²A ) + 3
= 3 ( -1 ) + 3
************************************
We know the Trigonometric identity:
1 + tan²A = sec²A
=> tan²A - sec²A = -1
***********************************
= -3 + 3
= 0
•••••
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