Question

gunum
Write all the other
Evaluate :
4. Choose
sin? 63° + sin? 27°
cos’ 17° + cos² 73°
(ü) sin 25° cos 65° + cos 25° sin 65°
hoose the correct option. Justify your choice.
9 sec A - 9 tan’ A =
(A) 1
(B) 9..
(C) 8
(1 + tan + sec ) (1 + cot - cosec ) = .
(A) O
(B) 1
(C) 2
( (sec A+ tan A) (1 - sin A) =
(C) cosec A
(D) O
(D) -1
the 14
(A) sec A
(B) sin A
(D) COS A
1 +tan? A
It cot² A
• O, let u
O and tar
(A) sec? A
(B) -1
Prove the followin
(C) cot? A
where the angles involved are ac
(D) tan? A
sles involved are acute angles for which the
express
pressions are defined.
1 - cos e
(cosec
cos A
-cot 0)2 = 1 + cos o
1 + sin A
+ sin a tu​

Answer 1

Answer:

sin² 90-27 + sin² 27

cos² 27+ sin² 27

:1

cos² 90-73+ cos²73

sin² 73+ cos ² 73

:1

sin 25. cos 65 + cos 25. sin 65

1+1

2

9sec A- 9tan A

9 (secA-tan A)

9x1

9 option B

(1+ tan+sec+) (1+cot - cosec)

(1+ tan +1+tan) (1+ cot -1+cot)

(2+2tan) (2 cot)

2. option 3

(secA+tan A)(1-sinA)

(cosA÷sinA+ sinA÷cosA) (1-sin²A)

(cos²A+sin²A÷sinA.cosA)(1- 1÷cosec²A)

1(cosec²A-1÷cosec²A)

1(cot²A÷cosec²A)

1x1

:1

Step-by-step explanation:

I think last one is wrong u would better check

also I don't understand ur language so I haven't solved other questions....

Next time better write the questions correctly or take a photo of your text book and attache it.....