Q32 of 186 Page 345

Find the value of .

Consider – 4 cos 50° cosec 40°


= – 4 cos 50° cosec (90° – 40°)


= – 4 cos 50° sec 50°


= 1 + 1 – 4


= – 2


More from this chapter

All 186 →
30

If tan A = 5/12, find the value of (sin A + cos A) sec A.

 31

If sin θ = cos (θ – 45°), where θ is acute, find the value of θ.

 33

Find the value of sin 48° sec 42° + cos 48° cosec 42°.

 34

If x = a sin θ and y = b cos θ, write the value of (b2x2 + a2y2).