Question

if 15a²+4b² = 47 then find the value of
15a²-4b² 7

(1) 7a-3b
7a+3b​

Answer 1

Step-by-step explanation:

Case study ( class 8th-12th )

hktuczf-bhk (g)

The angle of elevation of stationary cloud from a point 2500 m above a lake is 30 and the angle of depression of its reflection in the lake is 45°. The height of the cloud above the lake