Question

119.
3
in the decimal form is equal to
4
(a) 0.8
(c) 0.75
25
hly
(b) 0.34
(d) 0.25
6
15
wil​

Answer 1

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