If 7 sinA -24 cosecA= 0 then find the value of secA
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Answer:
7sin2θ+3cos2θ=4
⇒7sin2θ+3(1−sin2θ)=4
⇒7sin2θ+3−3sin2θ=4
⇒4sin2θ=1
⇒sin2θ=41
⇒sinθ=21
⇒sinθ=sin30∘
⇒θ=30∘
L.H.S =secθ+cosecθ
=sec30∘+cosec30∘
=32+2
= R.H.S
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