Question

tan square a *sec square b-sec square a*tan square b is equal to tan square a - tan square b

Answer 1

Answer:

Step-by-step explanation:

Answer 2

Answer:

tan²Asec²B - sec²Atan²B = tan²A - tan²B

Step-by-step explanation:

LHS = tan²Asec²B - sec²Atan²B

= tan²A( 1+tan²B) - (1+tan²A)tan²B

/* By Trigonometric identity:

Sec²A = 1 + tan²A */

= tan²A + tan²Atan²B - tan²B - tan²Atan²B

= tan²A - tan²B

= RHS

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