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23. Trigonometric Ratios and Trigonometric Identities
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Q1 of 80 Page 311

If then let us write the value of by determining it.

Given,


⇒ sin2θ + cos2θ = 1


⇒


⇒


⇒


⇒


⇒


⇒


⇒


⇒


⇒


=


=


More from this chapter

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10

In an isosceles triangle ABC, AB = AC and ∠BAC = 90°; the bisector of ∠BAC intersects the side BC at the point D.

Let us prove that,

11

Let us determine the value/value of for which 2 cos2 θ – 3 cos θ + 1 = 0 will be true.

1

If then let us show that

1

If tan θ=1, then let us determine the value of

Questions · 80
23. Trigonometric Ratios and Trigonometric Identities
1 2 3 4 5 6 7 8 9 1 2 3 4 5 5 5 5 5 5 5 5 5 6 6 6 6 6 6 6 7 7 7 8 9 9 10 10 11 1 1 1 2 3 3 3 3 3 3 3 3 3 3 3 3 3 3 4 4 5 5 6 6 6 6 6 6 7 8 9 9 9 9 9 9 9 10 10 10 10 10
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