Question

find range 3/4 cos theta

Answer 1

Answer:

30 degree ans

Step-by-step explanation:

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Answer 2

Answer:

−1≤cosx≤1

or −4≤4cosx≤4

or −7≤4cosx−3≤1

or −7≤4cosx−3<0 or 0<4cosx−3≤1 ∵4cosx−3



=0

or −

7

1

≥

4cosx−3

1

>−∞ or ∞>

4cosx−3

1

≥1

or

4cosx−3

1

ϵ(−∞,−

7

1

]∪[1,∞]

Therefore, a+b=7+1=8

Ans: 8