Question

If Sin 5θ= 4cosθ then θ=? ​

Answer 1

Answer:

If sinθ=4cosθ, then what is the value of sinθcosθ?

When will Lunchclub be active in New Delhi?

Lunchclub is now virtual and finally open to users in New Delhi! Network from home and make relevant connections locally and glob

Suppose theta =x.

sinx = 4.cosx. , dividing both sides by cosx.

tanx=4…………………(1)

Now , sinx.cosx =?

= (sinx.cosx)/(1). , putting 1 = cos^2 x + sin^2 x.

= ( sinx.cosx)/(cos^2 x+ sin^2 x). , dividing in Nr and Dr by cos^2 x.

= tanx/(1+tan^2 x). , putting tanx= 4.

= 4/(1+4^2).

= 4/17. Answer.