119.3in the decimal form is equal to4(a) 0.8(c) 0.7525hly(b) 0.34(d) 0.25615wil About the author Mary
Answer: If a² + b² + 2ab cos θ = 1 ; c² + d² + 2cd cos θ = 1 and ac + bd + (ad + bc)cos θ = 0 ; then prove that a² + c² = cosec² θ. 2) If x = (sin³ p/cos² p) ; y = (cos³ p/sin² p) and sin p + cos p = 1/2 ; then find the value of x + y. bro question samaj nahi aa raha Reply
Answer:
If a² + b² + 2ab cos θ = 1 ; c² + d² + 2cd cos θ = 1 and ac + bd + (ad + bc)cos θ = 0 ; then prove that a² + c² = cosec² θ.
2) If x = (sin³ p/cos² p) ; y = (cos³ p/sin² p) and sin p + cos p = 1/2 ; then find the value of x + y.
bro question samaj nahi aa raha