10 1f 17 cos A = 8, find 15 cosec A - 8 sec B.
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Answered by
0
Step-by-step explanation:
17 cos A = 8
cos A= 8/17
secA= 17/8
again,
cosA= 8/17
√1-sin²A= 8/17
1-sin²A= (8/17)²
1-sin²A= 64/289
sin²A= 1-64/289
sin²A= 225/289
sin²A= (15/17)²
sinA= 15/17
cosecA=17/15
hence cosecA=17/15 and secA=17/8
15cosec A - 8 sec A
15•17/15 - 8•17/8
17-17
0
#666
Answered by
6
Answer:
0
Step-by-step explanation:
cosA = 8/17
H^2 = B^2+P^2
17^2 = 8^2+ P^2
289 = 64+ P^2
289-64=P^2
225=p^2
√225=P
15=P
15×17/15-8×17/8
17-17=0
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