Find the exact value of tan 155+tan(-95)/1-tan155tan(-95)

The actual length of side t is 0.045 cm. use the scale drawing to find the actual side length of w. a) 0.06 cm b) 0.075 cm c) 0.45 cm d) 0.75 cm

Ijust need to see how to do this. so you don’t have to answer all of them just a step by step explanation of one.

The volume of a sphere is increased by 6%. calculate the corresponding percentage increased in it area.