find the value of k If cos 20 degree / sin 70 degree+2 cos theta/sin (90-theta)=k/2
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Given cos 20 / sin 70 degree + 2 cos theta/ sin(90-theta) = k/2
= cos(90-70)/sin 70 + 2 cos theta/cos theta = k/2 [sin(90-theta) = cos theta]
= sin 70/sin70 + 2 = k/2
= 1 + 2 = k/2
on cross multiplication, we get
k = 6.
Hope this helps!
= cos(90-70)/sin 70 + 2 cos theta/cos theta = k/2 [sin(90-theta) = cos theta]
= sin 70/sin70 + 2 = k/2
= 1 + 2 = k/2
on cross multiplication, we get
k = 6.
Hope this helps!
siddhartharao77:
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