Question

7.
evaluate : (i)
(1 + sin 0) (1 - sin o)
(1 + cos 0) (1 - cos )
7. Ifcot =
(ii) cot? 0
8
1-tan? A
1 + tan’A
= cos? A-sinA or not.
8. If 3 cot A = 4, check whether
1
13
find the value of:
9. In triangle ABC, right-angled at B, if tan A =
(1) sin A cos C + cos A sin C
(i) cos A cos C - sin A sin C
10. In A PQR, right-angled at Q, PR + QR = 25 cm and PQ = 5 cm. Determine the values of
sin P, cos P and tan P.
​

Answer 1

Answer:

7(i)=(1-sin^2 0)(1-cos^2 0)

Step-by-step explanation:

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