In this lesson, we will learn how to solve trigonometric equations using cofunction identities.

Q1:

Find the value of sec(90+𝜃)∘ given csc𝜃=178 where 0<𝜃<90∘∘.

Q2:

Find the value of cot(270+𝜃)∘ given tan𝜃=−43 where 90<𝜃<180∘∘.

Q3:

Find the value of cos(180+𝜃)∘ given sin(90−𝜃)=−717∘ where 𝜃 is the smallest positive angle.

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