Question

if sin theta + cos theta is equal to M and sec theta + cos theta is equal and then n(m+1)(m-1)?

Answer 1

★ ★ Hey there! ★ ★

sinθ+cosθ=M

secθ+cosθ=N

n(m+1)(m-1)

=n(m²+m-m-1)

=n(m²-1)

=secθ+cosθ(sinθ+cosθ)²-1

= secθ+cosθ(sin²θ +cos²θ-2sinθcosθ-1)

= secθ+cosθ(1-1- 2sinθcosθ)

= secθ+cosθ(-2sinθcos)

hope helped!