In this lesson, we will learn how to use Pythagorean trigonometric identities to solve trigonometric equations.
Q1:
Find the value of 𝑋 in degrees given cos(𝑋+19)=1√2 where 𝑋+19 is an acute angle.
Q2:
Knowing that 5𝑥+12𝑥=13sincos, find sin𝑥 and cos𝑥.
Q3:
Knowing that 3𝑥−4𝑥=5sincos, find sin𝑥 and cos𝑥.
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