Question

X cosA. Cos(90-A)+sinA . Sin(90-A) = 0 find x

Answer 1

Answer:

The value of x is -1

Step-by-step explanation:

xcos(a)×cos (90-a)+sin (a)×sin (90-a)=0

we know that, cos (90-a)= sin (a) and sin (90-a)=cos(a)

By substituting the values we get,

xcos (a)×sin (a)+sin (a)×cos (a)=0

xcos(a)×sin (a)= -sin (a)×cos (a)

x= -sin (a)×cos (a)÷cos (a)×sin (a)

Therefore, x= -1.

Answer 2

Step-by-step explanation:

X = -1

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