Question

Prove that sin 70º -Cos 40/
cos 50º – sin 20°
1/√3​

Answer 1

Answer:

If =3 then the value of sin 4θ – cos4θ is =3 , sin4θ – cos4θ क क (1) 4/3 (2) 3/4 (3)

5/3 (4) 3/5 Ans: (4) 70. A sphere has the same curved surface area as a cone of

vertical height 40 cm and radius 30 cm. ... क क 30° क क ओ 20 क B क क 60° क

ई () (1) √ ()√ (3) 10√ () √ Ans: (3) Directions (72–75): Given here is a pie chart

showing the cost of gold in 2010, ... (1) 50% (2) 60% (3) 70% (4) 80% Ans: (4) 75.