Question

please answer me fastly​

Answer 1

♦Question:-

If Sin∅+Cos∅=a and Tan∅+Cot∅=b,

Find→ b(a²-1)

a)0, b)1, c)2, d)3

$\rule{200}{1}$

★AnswEr:-

★Multiply Sin∅+Cos∅ by Sin∅+Cos∅★

→Sin²∅+Cos²∅=1=(a)²

→1=a²

♦Now using this in Equation b(a²-1)♦

→b(1-1)

→b×0

→0

Hence Option a)0 is correct.

$\rule{200}{7}$

Answer 2

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