Question

pls give answers for Q7, 8, 9 & 10.
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Answer 1

Answer:

q9)

if tanA=1 , then A= 45°

and tanB=√3, then B=60°

putting the value of A and B in q

cos45°.cos60°-sin45°.sin60°

1/√2(1/2)-1/√2(√3/2)

1/2√2-√3/2√2

1-√3/2√2

if required, u can simplify this in shorter form

Q10) cos(90-theta)/1+sin(90-theta)+1+sin(90-theta)/cos(90-theta)

sin/1+cos+1+cos/sin

sin²(1+cos)²/sin.1+cos

sin²+2cos²(1+cos²)/sin(1+cos²)

sin²+2cos²/sin

2(sin²+cos²)/sin

2(1)/sin

2cosec

....hope it will help uh

pls mark it the brain list