Question

hkw to solve question no 15??
plz give step by step explaination​

Answer 1

Step-by-step explanation:

tan alpha + cot alpha =2

tan alpha + cot alpha –2 =0

under root on both side

√tan alpha + cot alpha –2. = 0

√(√tan alpha ) ². + (√cot alpha)² –2 = 0

(√ tan alpha – √cot alpha )². = 0

√tan alpha – √cot alpha. =0

√ tan alpha = √ cot alpha

tan alpha. =. cot alpha

and we know that

tan 45 = cot 45 = 1

so ,

√tan alpha. + √ cot alpha. = 1+1

√ tan alpha + √ cot alpha. = 2