Question

If cosA=0.6, the value of 5 sinA-3 tan A is

Answer 1

Answer:

1

Explanation:

cosA =6/10

so we get adjacentside and hypt.

by pythagorus therom we get opposite side as 8

Answer 2

Answer:

if cosA= 0.6

cosA = b/h = 6/10

so base = 6 and hypotenuse=10

by Pythagores theorem

(h)^2 = ( p)^2 + (b)^2

(10)^2 = p^2 + (6)^2

100 - 36 = p^2

64 =p^2

√64 =p

8 =p

so perpendicular = 8

now

5sinA - 3 tanA

5* p/h- 3* p/b

5* 8/10 - 3* 8/6

4-4

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