Question

pls answer the questions fast pls​

Answer 1

15. (d) 6

16. 2tan30°/ 1-tan²30°

= 2×1/√3/ 1- (1/√3)²

= 2/√3/ 1-1/3

= 2/√3/ 3-1/3

= 2/√3/ 2/3

= 2/√3× 3/2

= 3√3 = 1√3 = (d) cot 60°

18. (a) 1

Sorry buddy i am nt able to solve d 14 and 17 question m also in 10th I tried my best to give u these answers prefer the attachment!!

Hope it helps buddy