1answer.
Ask question
Login Signup
Ask question
All categories
  • English
  • Mathematics
  • Social Studies
  • Business
  • History
  • Health
  • Geography
  • Biology
  • Physics
  • Chemistry
  • Computers and Technology
  • Arts
  • World Languages
  • Spanish
  • French
  • German
  • Advanced Placement (AP)
  • SAT
  • Medicine
  • Law
  • Engineering
Natali [406]
3 years ago
5

Tan^2 70° -sec^2 70°​

Mathematics
1 answer:
kipiarov [429]3 years ago
4 0

Answer:

-1

Step-by-step explanation:

We need to find the value of tan² 70° -sec² 70°​.

We know that,

\sec^2\theta-\tan^2\theta=1 ...(1)

We can write the given expression as :

tan² 70° -sec² 70° = -(-tan² 70° +sec² 70°)

=-(sec² 70°-tan² 70°)

Using identity (1)

=-(1)

= -1

Hence, the value of the given expression is -1.

You might be interested in
If x^2-13x+42=(x+A)(x+B), then find the value of 3A-B
tigry1 [53]

Answer:

- 11 or - 15

Step-by-step explanation:

Factorise

x² - 13x + 42

Consider the factors of the constant term (+ 42) which sum to give the coefficient of the x- term (- 13)

The factors are - 6 and - 7, since

- 6 × - 7 = + 42 and - 6 - 7 = - 13, thus

x² - 13x + 42 = (x - 6)(x - 7)

compare to (x + A)(x + B)

A = - 6, B = - 7

thus 3A - B = 3(- 6) - (- 7) = - 18 + 7 = - 11

The factors may also be expressed as (x - 7)(x - 6)

with A = - 7 and B = - 6, then

3A - B = 3(- 7) - (- 6) = - 21 + 6 = - 15

5 0
3 years ago
What are some real world examples of an obtuse angle?
lisov135 [29]
A reclined chair or maybe a laptop
8 0
3 years ago
Please help with this question. I need an answer ASAP!! I need help! I don't understand this!
Romashka-Z-Leto [24]

Answer: 42°

<u>Step-by-step explanation:</u>

HJ is an angle bisector of ∠IHK so

∠IHJ ≅ ∠KHJ ⇒ m∠IHJ = m∠KHJ

                           3a + 6 = 5a - 18

                                   6  = 2a - 18

                                  24 = 2a

                                   12 = a

∠IHJ = 3a + 6

        = 3(12) + 6

        = 36 + 6

         = 42

8 0
3 years ago
Which graph shows the solution of the following system of inequalities :
Basile [38]
G is the right answer I just did it no cap
4 0
3 years ago
In the equation 4+m =11 the first step to solving for m would be
Taya2010 [7]

Answer:

firstly take 4 to other side

m=11-4=7

6 0
3 years ago
Read 2 more answers
Other questions:
  • Explain how you would solve 16/c=8
    5·2 answers
  • 3b-4/2 = c (solve for b)<br><br> please show work, thanks!
    10·1 answer
  • 10. A movie theater advertises that a family of two adults, one student, and one child between the ages of 3
    12·2 answers
  • Select the correct answer Which pair of statements correctly compares the two data sets? 11 12 9 10 13 6 8 4 5 7 3 0 2 1 : 00 .
    9·1 answer
  • What is the 18th term of the arithmetic
    12·1 answer
  • What is the radius of this circle?
    12·2 answers
  • Angle sec0= -13/12 and cot&lt;0. what are the exact values of tan0 and sin0.
    13·2 answers
  • A child building a tower with Blocks uses 15 for the bottom row. Each row has 2 fewer blocks than the previous row. What formula
    12·1 answer
  • Which table represents a linear function?
    7·2 answers
  • I just need help graphing!
    5·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!