Question

5 tan² A – 5 sec² A + 1 is equal to
(a) 6
(6) -5
(c) 1
(d) -4

Answer 1

Answer:

(a) 6

Step-by-step explanation:

like we have 5 and -5 from that so, we have 1 as + and answer is 6

Answer 2

To find :

the value of :

5 tan²A-5 sec²A +1

We know that :

• sec²A-tan²A = 1
• tan²A-sec²A = -1

Solution :

given, 5 tan²A - 5 sec²A +1 = ???

⇒5(tan²A-sec²A)+1 = ???

⇒5(-1)+1=??

⇒ -5+1 = -4

hence, 5 tan²A -5 sec² A +1 = -4